401065140 has 48 divisors (see below), whose sum is σ = 1283409792. Its totient is φ = 91671936.

The previous prime is 401065123. The next prime is 401065193. The reversal of 401065140 is 41560104.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 477039 + ... + 477878.

It is an arithmetic number, because the mean of its divisors is an integer number (26737704).

Almost surely, 2^401065140 is an apocalyptic number.

It is an amenable number.

401065140 is an abundant number, since it is smaller than the sum of its proper divisors (882344652).

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

401065140 is a wasteful number, since it uses less digits than its factorization.

401065140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 954936 (or 954934 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 401065140 is about 20026.6107966376. The cubic root of 401065140 is about 737.4597216344.

The spelling of 401065140 in words is "four hundred one million, sixty-five thousand, one hundred forty".