122513645 has 16 divisors (see below), whose sum is σ = 156116160. Its totient is φ = 91977984.

The previous prime is 122513641. The next prime is 122513647. The reversal of 122513645 is 546315221.

It is a cyclic number.

It is not a de Polignac number, because 122513645 - 2² = 122513641 is a prime.

It is a super-3 number, since 3×122513645³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122513641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30314 + ... + 34116.

It is an arithmetic number, because the mean of its divisors is an integer number (9757260).

Almost surely, 2^122513645 is an apocalyptic number.

It is an amenable number.

122513645 is a deficient number, since it is larger than the sum of its proper divisors (33602515).

122513645 is a wasteful number, since it uses less digits than its factorization.

122513645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4204.

The product of its digits is 7200, while the sum is 29.

The square root of 122513645 is about 11068.5882116917. The cubic root of 122513645 is about 496.6626335323.

Adding to 122513645 its reverse (546315221), we get a palindrome (668828866).

The spelling of 122513645 in words is "one hundred twenty-two million, five hundred thirteen thousand, six hundred forty-five".