402402125400 has 144 divisors (see below), whose sum is σ = 1371160547400. Its totient is φ = 97552012800.

The previous prime is 402402125393. The next prime is 402402125401. The reversal of 402402125400 is 4521204204.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402402125401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2698765 + ... + 2843964.

Almost surely, 2^402402125400 is an apocalyptic number.

402402125400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

402402125400 is an abundant number, since it is smaller than the sum of its proper divisors (968758422000).

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

402402125400 is a wasteful number, since it uses less digits than its factorization.

402402125400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5542770 (or 5542750 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 24.

Adding to 402402125400 its reverse (4521204204), we get a palindrome (406923329604).

The spelling of 402402125400 in words is "four hundred two billion, four hundred two million, one hundred twenty-five thousand, four hundred".