64091142 has 32 divisors (see below), whose sum is σ = 149923200. Its totient is φ = 20238984.

The previous prime is 64091119. The next prime is 64091143. The reversal of 64091142 is 24119046.

64091142 is a `hidden beast` number, since 640 + 9 + 1 + 14 + 2 = 666.

64091142 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64091143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30208 + ... + 32259.

It is an arithmetic number, because the mean of its divisors is an integer number (4685100).

Almost surely, 2^64091142 is an apocalyptic number.

64091142 is an abundant number, since it is smaller than the sum of its proper divisors (85832058).

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

64091142 is a wasteful number, since it uses less digits than its factorization.

64091142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62497 (or 62491 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 64091142 is about 8005.6943483998. The cubic root of 64091142 is about 400.1897891027.

The spelling of 64091142 in words is "sixty-four million, ninety-one thousand, one hundred forty-two".