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122423423 = 831474981
BaseRepresentation
bin1110100110000…
…00100001111111
322112100202100212
413103000201333
5222320022143
620051543035
73014403413
oct723004177
9275322325
10122423423
1163117591
1234bbaa7b
131c494cc5
141238ad43
15ab33918
hex74c087f

122423423 has 4 divisors (see below), whose sum is σ = 123898488. Its totient is φ = 120948360.

The previous prime is 122423393. The next prime is 122423429. The reversal of 122423423 is 324324221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 324324221 = 1324948017.

It is a cyclic number.

It is not a de Polignac number, because 122423423 - 212 = 122419327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122423429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 737408 + ... + 737573.

It is an arithmetic number, because the mean of its divisors is an integer number (30974622).

Almost surely, 2122423423 is an apocalyptic number.

122423423 is a deficient number, since it is larger than the sum of its proper divisors (1475065).

122423423 is an equidigital number, since it uses as much as digits as its factorization.

122423423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1475064.

The product of its digits is 2304, while the sum is 23.

The square root of 122423423 is about 11064.5118735532. The cubic root of 122423423 is about 496.5406854823.

Adding to 122423423 its reverse (324324221), we get a palindrome (446747644).

The spelling of 122423423 in words is "one hundred twenty-two million, four hundred twenty-three thousand, four hundred twenty-three".

Divisors: 1 83 1474981 122423423