402250135044 has 12 divisors (see below), whose sum is σ = 938583648464. Its totient is φ = 134083378344.

The previous prime is 402250135039. The next prime is 402250135057. The reversal of 402250135044 is 440531052204.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×402250135044² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16760422282 + ... + 16760422305.

Almost surely, 2^402250135044 is an apocalyptic number.

It is an amenable number.

402250135044 is an abundant number, since it is smaller than the sum of its proper divisors (536333513420).

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

402250135044 is a wasteful number, since it uses less digits than its factorization.

402250135044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33520844594 (or 33520844592 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 402250135044 its reverse (440531052204), we get a palindrome (842781187248).

The spelling of 402250135044 in words is "four hundred two billion, two hundred fifty million, one hundred thirty-five thousand, forty-four".