1402400120 has 32 divisors (see below), whose sum is σ = 3442255920. Its totient is φ = 509963520.

The previous prime is 1402400117. The next prime is 1402400143. The reversal of 1402400120 is 210042041.

It is a junction number, because it is equal to n+sod(n) for n = 1402400095 and 1402400104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1593197 + ... + 1594076.

Almost surely, 2^1402400120 is an apocalyptic number.

1402400120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1402400120 is an abundant number, since it is smaller than the sum of its proper divisors (2039855800).

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

1402400120 is a wasteful number, since it uses less digits than its factorization.

1402400120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3187295 (or 3187291 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 1402400120 is about 37448.6330858684. The cubic root of 1402400120 is about 1119.3278598928.

Adding to 1402400120 its reverse (210042041), we get a palindrome (1612442161).

The spelling of 1402400120 in words is "one billion, four hundred two million, four hundred thousand, one hundred twenty".