263125442 has 4 divisors (see below), whose sum is σ = 394688166. Its totient is φ = 131562720.

The previous prime is 263125403. The next prime is 263125459. The reversal of 263125442 is 244521362.

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., 198499921 + 64625521 = 14089^2 + 8039^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65781359 + ... + 65781362.

Almost surely, 2^263125442 is an apocalyptic number.

263125442 is a deficient number, since it is larger than the sum of its proper divisors (131562724).

263125442 is a wasteful number, since it uses less digits than its factorization.

263125442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131562723.

The product of its digits is 11520, while the sum is 29.

The square root of 263125442 is about 16221.1418217091. The cubic root of 263125442 is about 640.7977048608.

The spelling of 263125442 in words is "two hundred sixty-three million, one hundred twenty-five thousand, four hundred forty-two".