402403231452 has 24 divisors (see below), whose sum is σ = 939600745216. Its totient is φ = 134040143088.

The previous prime is 402403231421. The next prime is 402403231463. The reversal of 402403231452 is 254132304204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11765638 + ... + 11799789.

Almost surely, 2^402403231452 is an apocalyptic number.

It is an amenable number.

402403231452 is an abundant number, since it is smaller than the sum of its proper divisors (537197513764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

402403231452 is a wasteful number, since it uses less digits than its factorization.

402403231452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23566857 (or 23566855 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 30.

Adding to 402403231452 its reverse (254132304204), we get a palindrome (656535535656).

The spelling of 402403231452 in words is "four hundred two billion, four hundred three million, two hundred thirty-one thousand, four hundred fifty-two".