249953742 has 32 divisors (see below), whose sum is σ = 579605760. Its totient is φ = 79695000.

The previous prime is 249953707. The next prime is 249953747. The reversal of 249953742 is 247359942.

249953742 is a `hidden beast` number, since 24 + 99 + 537 + 4 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249953747) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99384 + ... + 101867.

It is an arithmetic number, because the mean of its divisors is an integer number (18112680).

Almost surely, 2^249953742 is an apocalyptic number.

249953742 is an abundant number, since it is smaller than the sum of its proper divisors (329652018).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

249953742 is a wasteful number, since it uses less digits than its factorization.

249953742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201285 (or 201279 counting only the distinct ones).

The product of its digits is 544320, while the sum is 45.

The square root of 249953742 is about 15809.9254267691. The cubic root of 249953742 is about 629.9216682655.

The spelling of 249953742 in words is "two hundred forty-nine million, nine hundred fifty-three thousand, seven hundred forty-two".