1232520401 has 16 divisors (see below), whose sum is σ = 1420675200. Its totient is φ = 1047413760.

The previous prime is 1232520397. The next prime is 1232520403. The reversal of 1232520401 is 1040252321.

It is a cyclic number.

It is not a de Polignac number, because 1232520401 - 2² = 1232520397 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1232520403) 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, 1012145 + ... + 1013361.

It is an arithmetic number, because the mean of its divisors is an integer number (88792200).

Almost surely, 2^1232520401 is an apocalyptic number.

It is an amenable number.

1232520401 is a deficient number, since it is larger than the sum of its proper divisors (188154799).

1232520401 is a wasteful number, since it uses less digits than its factorization.

1232520401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2344.

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

The square root of 1232520401 is about 35107.2699166426. The cubic root of 1232520401 is about 1072.1726028163.

Adding to 1232520401 its reverse (1040252321), we get a palindrome (2272772722).

The spelling of 1232520401 in words is "one billion, two hundred thirty-two million, five hundred twenty thousand, four hundred one".