1232521401 has 16 divisors (see below), whose sum is σ = 1715624064. Its totient is φ = 785583744.

The previous prime is 1232521379. The next prime is 1232521417. The reversal of 1232521401 is 1041252321.

It is not a de Polignac number, because 1232521401 - 2¹⁵ = 1232488633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1232521421) 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, 284685 + ... + 288981.

It is an arithmetic number, because the mean of its divisors is an integer number (107226504).

Almost surely, 2^1232521401 is an apocalyptic number.

It is an amenable number.

1232521401 is a deficient number, since it is larger than the sum of its proper divisors (483102663).

1232521401 is a wasteful number, since it uses less digits than its factorization.

1232521401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8480.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 1232521401 is about 35107.2841587042. The cubic root of 1232521401 is about 1072.1728927838.

Adding to 1232521401 its reverse (1041252321), we get a palindrome (2273773722).

The spelling of 1232521401 in words is "one billion, two hundred thirty-two million, five hundred twenty-one thousand, four hundred one".