263520542 has 4 divisors (see below), whose sum is σ = 395280816. Its totient is φ = 131760270.

The previous prime is 263520541. The next prime is 263520589. The reversal of 263520542 is 245025362.

263520542 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263520541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65880134 + ... + 65880137.

It is an arithmetic number, because the mean of its divisors is an integer number (98820204).

Almost surely, 2^263520542 is an apocalyptic number.

263520542 is a deficient number, since it is larger than the sum of its proper divisors (131760274).

263520542 is a wasteful number, since it uses less digits than its factorization.

263520542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131760273.

The product of its (nonzero) digits is 14400, while the sum is 29.

The square root of 263520542 is about 16233.3158042342. The cubic root of 263520542 is about 641.1182776330.

The spelling of 263520542 in words is "two hundred sixty-three million, five hundred twenty thousand, five hundred forty-two".