264142642 has 4 divisors (see below), whose sum is σ = 396213966. Its totient is φ = 132071320.

The previous prime is 264142633. The next prime is 264142663. The reversal of 264142642 is 246241462.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 150528361 + 113614281 = 12269^2 + 10659^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66035659 + ... + 66035662.

Almost surely, 2^264142642 is an apocalyptic number.

264142642 is a deficient number, since it is larger than the sum of its proper divisors (132071324).

264142642 is a wasteful number, since it uses less digits than its factorization.

264142642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132071323.

The product of its digits is 18432, while the sum is 31.

The square root of 264142642 is about 16252.4657206222. The cubic root of 264142642 is about 641.6223828512.

The spelling of 264142642 in words is "two hundred sixty-four million, one hundred forty-two thousand, six hundred forty-two".