400242043100120 has 64 divisors (see below), whose sum is σ = 1020860271900000. Its totient is φ = 140003694425088.

The previous prime is 400242043100111. The next prime is 400242043100147. The reversal of 400242043100120 is 21001340242004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20255154245 + ... + 20255174004.

Almost surely, 2^{400242043100120} is an apocalyptic number.

400242043100120 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

400242043100120 is an abundant number, since it is smaller than the sum of its proper divisors (620618228799880).

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

400242043100120 is a wasteful number, since it uses less digits than its factorization.

400242043100120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40510328292 (or 40510328288 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 400242043100120 its reverse (21001340242004), we get a palindrome (421243383342124).

The spelling of 400242043100120 in words is "four hundred trillion, two hundred forty-two billion, forty-three million, one hundred thousand, one hundred twenty".