401542164 has 48 divisors (see below), whose sum is σ = 1042117440. Its totient is φ = 133708320.

The previous prime is 401542153. The next prime is 401542171. The reversal of 401542164 is 461245104.

It is a super-2 number, since 2×401542164² = 322472218939605792, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 194562 + ... + 196614.

It is an arithmetic number, because the mean of its divisors is an integer number (21710780).

Almost surely, 2^401542164 is an apocalyptic number.

It is an amenable number.

401542164 is an abundant number, since it is smaller than the sum of its proper divisors (640575276).

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

401542164 is a wasteful number, since it uses less digits than its factorization.

401542164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3877 (or 3869 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 401542164 is about 20038.5170109966. The cubic root of 401542164 is about 737.7519822281.

Adding to 401542164 its reverse (461245104), we get a palindrome (862787268).

The spelling of 401542164 in words is "four hundred one million, five hundred forty-two thousand, one hundred sixty-four".