64331142 has 32 divisors (see below), whose sum is σ = 131604480. Its totient is φ = 20959200.

The previous prime is 64331129. The next prime is 64331147. The reversal of 64331142 is 24113346.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64331147) 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, 49659 + ... + 50937.

It is an arithmetic number, because the mean of its divisors is an integer number (4112640).

Almost surely, 2^64331142 is an apocalyptic number.

64331142 is an abundant number, since it is smaller than the sum of its proper divisors (67273338).

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

64331142 is a wasteful number, since it uses less digits than its factorization.

64331142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1468.

The product of its digits is 1728, while the sum is 24.

The square root of 64331142 is about 8020.6696727892. The cubic root of 64331142 is about 400.6886927419.

Adding to 64331142 its reverse (24113346), we get a palindrome (88444488).

The spelling of 64331142 in words is "sixty-four million, three hundred thirty-one thousand, one hundred forty-two".