402531150400 has 84 divisors (see below), whose sum is σ = 995456276800. Its totient is φ = 160203225600.

The previous prime is 402531150383. The next prime is 402531150401. The reversal of 402531150400 is 4051135204.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (402531150401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 313716 + ... + 950515.

Almost surely, 2^402531150400 is an apocalyptic number.

402531150400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

402531150400 is an abundant number, since it is smaller than the sum of its proper divisors (592925126400).

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

402531150400 is a wasteful number, since it uses less digits than its factorization.

402531150400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1264452 (or 1264437 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 402531150400 its reverse (4051135204), we get a palindrome (406582285604).

The spelling of 402531150400 in words is "four hundred two billion, five hundred thirty-one million, one hundred fifty thousand, four hundred".