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122402421241 = 429728485553
BaseRepresentation
bin111000111111111000…
…0001011100111111001
3102200221102202020212221
41301333300023213321
54001140004434431
6132121512404041
711562150261652
oct1617760134771
9380842666787
10122402421241
1147a01a80821
121b8803a6621
13b708b400b9
145cd2436529
1532b5d59111
hex1c7fc0b9f9

122402421241 has 4 divisors (see below), whose sum is σ = 122430911092. Its totient is φ = 122373931392.

The previous prime is 122402421227. The next prime is 122402421257. The reversal of 122402421241 is 142124204221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 142124204221 = 236179313227.

It can be written as a sum of positive squares in 2 ways, for example, as 100803710016 + 21598711225 = 317496^2 + 146965^2 .

It is a cyclic number.

It is not a de Polignac number, because 122402421241 - 29 = 122402420729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122402421041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14238480 + ... + 14247073.

It is an arithmetic number, because the mean of its divisors is an integer number (30607727773).

Almost surely, 2122402421241 is an apocalyptic number.

It is an amenable number.

122402421241 is a deficient number, since it is larger than the sum of its proper divisors (28489851).

122402421241 is an equidigital number, since it uses as much as digits as its factorization.

122402421241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28489850.

The product of its (nonzero) digits is 2048, while the sum is 25.

Adding to 122402421241 its reverse (142124204221), we get a palindrome (264526625462).

The spelling of 122402421241 in words is "one hundred twenty-two billion, four hundred two million, four hundred twenty-one thousand, two hundred forty-one".

Divisors: 1 4297 28485553 122402421241