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122524013 = 235327131
BaseRepresentation
bin1110100110110…
…01000101101101
322112112212100102
413103121011231
5222331232023
620054040445
73015302603
oct723310555
9275485312
10122524013
1163186117
1235049125
131c4cba21
14123b5873
15ab53628
hex74d916d

122524013 has 4 divisors (see below), whose sum is σ = 127851168. Its totient is φ = 117196860.

The previous prime is 122523991. The next prime is 122524033. The reversal of 122524013 is 310425221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 310425221 = 402177201.

It is a cyclic number.

It is not a de Polignac number, because 122524013 - 210 = 122522989 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 (122524033) 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, 2663543 + ... + 2663588.

It is an arithmetic number, because the mean of its divisors is an integer number (31962792).

Almost surely, 2122524013 is an apocalyptic number.

It is an amenable number.

122524013 is a deficient number, since it is larger than the sum of its proper divisors (5327155).

122524013 is an equidigital number, since it uses as much as digits as its factorization.

122524013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5327154.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 122524013 is about 11069.0565541965. The cubic root of 122524013 is about 496.6766435444.

Adding to 122524013 its reverse (310425221), we get a palindrome (432949234).

The spelling of 122524013 in words is "one hundred twenty-two million, five hundred twenty-four thousand, thirteen".

Divisors: 1 23 5327131 122524013