401203920 has 80 divisors (see below), whose sum is σ = 1339414272. Its totient is φ = 98757120.

The previous prime is 401203897. The next prime is 401203921. The reversal of 401203920 is 29302104.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401203921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61176 + ... + 67415.

Almost surely, 2^401203920 is an apocalyptic number.

401203920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

401203920 is an abundant number, since it is smaller than the sum of its proper divisors (938210352).

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

401203920 is a wasteful number, since it uses less digits than its factorization.

401203920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128620 (or 128614 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 401203920 is about 20030.0753867778. The cubic root of 401203920 is about 737.5447725380.

The spelling of 401203920 in words is "four hundred one million, two hundred three thousand, nine hundred twenty".