263134042 has 4 divisors (see below), whose sum is σ = 394701066. Its totient is φ = 131567020.

The previous prime is 263134037. The next prime is 263134049. The reversal of 263134042 is 240431362.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 240431362 = 2 ⋅120215681.

It can be written as a sum of positive squares in only one way, i.e., 218123361 + 45010681 = 14769^2 + 6709^2 .

It is a junction number, because it is equal to n+sod(n) for n = 263133998 and 263134016.

It is not an unprimeable number, because it can be changed into a prime (263134049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65783509 + ... + 65783512.

Almost surely, 2^263134042 is an apocalyptic number.

263134042 is a deficient number, since it is larger than the sum of its proper divisors (131567024).

263134042 is a wasteful number, since it uses less digits than its factorization.

263134042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131567023.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 263134042 is about 16221.4069056910. The cubic root of 263134042 is about 640.8046860687.

The spelling of 263134042 in words is "two hundred sixty-three million, one hundred thirty-four thousand, forty-two".