401100120 has 64 divisors (see below), whose sum is σ = 1337004000. Its totient is φ = 106959744.

The previous prime is 401100109. The next prime is 401100149. The reversal of 401100120 is 21001104.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

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, 184615 + ... + 186774.

Almost surely, 2^401100120 is an apocalyptic number.

401100120 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

401100120 is an abundant number, since it is smaller than the sum of its proper divisors (935903880).

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

401100120 is a wasteful number, since it uses less digits than its factorization.

401100120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371409 (or 371399 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 401100120 is about 20027.4841155848. The cubic root of 401100120 is about 737.4811608709.

Adding to 401100120 its reverse (21001104), we get a palindrome (422101224).

The spelling of 401100120 in words is "four hundred one million, one hundred thousand, one hundred twenty".