249565942 has 4 divisors (see below), whose sum is σ = 374348916. Its totient is φ = 124782970.

The previous prime is 249565919. The next prime is 249565949.

249565942 is nontrivially palindromic in base 10.

249565942 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 junction number, because it is equal to n+sod(n) for n = 249565892 and 249565901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249565949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62391484 + ... + 62391487.

It is an arithmetic number, because the mean of its divisors is an integer number (93587229).

Almost surely, 2^249565942 is an apocalyptic number.

249565942 is a deficient number, since it is larger than the sum of its proper divisors (124782974).

249565942 is a wasteful number, since it uses less digits than its factorization.

249565942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124782973.

The product of its digits is 777600, while the sum is 46.

The square root of 249565942 is about 15797.6562185661. The cubic root of 249565942 is about 629.5957278677.

The spelling of 249565942 in words is "two hundred forty-nine million, five hundred sixty-five thousand, nine hundred forty-two".