401211056 has 20 divisors (see below), whose sum is σ = 804152400. Its totient is φ = 193687872.

The previous prime is 401211043. The next prime is 401211061. The reversal of 401211056 is 650112104.

It is a super-2 number, since 2×401211056² = 321940622913270272, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 431876 + ... + 432803.

It is an arithmetic number, because the mean of its divisors is an integer number (40207620).

Almost surely, 2^401211056 is an apocalyptic number.

It is an amenable number.

401211056 is an abundant number, since it is smaller than the sum of its proper divisors (402941344).

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

401211056 is a wasteful number, since it uses less digits than its factorization.

401211056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 864716 (or 864710 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 401211056 is about 20030.2535181160. The cubic root of 401211056 is about 737.5491452838.

The spelling of 401211056 in words is "four hundred one million, two hundred eleven thousand, fifty-six".