142660864 has 18 divisors (see below), whose sum is σ = 284764970. Its totient is φ = 71330304.

The previous prime is 142660849. The next prime is 142660867. The reversal of 142660864 is 468066241.

It can be written as a sum of positive squares in only one way, i.e., 112190464 + 30470400 = 10592^2 + 5520^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142660867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278379 + ... + 278890.

Almost surely, 2^142660864 is an apocalyptic number.

It is an amenable number.

142660864 is a deficient number, since it is larger than the sum of its proper divisors (142104106).

142660864 is an frugal number, since it uses more digits than its factorization.

142660864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557285 (or 557271 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 37.

The square root of 142660864 is about 11944.0723373563. The cubic root of 142660864 is about 522.5184340619.

The spelling of 142660864 in words is "one hundred forty-two million, six hundred sixty thousand, eight hundred sixty-four".