249505942 has 24 divisors (see below), whose sum is σ = 436091040. Its totient is φ = 106752240.

The previous prime is 249505913. The next prime is 249505943.

249505942 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 249505895 and 249505904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249505943) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68692 + ... + 72232.

It is an arithmetic number, because the mean of its divisors is an integer number (18170460).

Almost surely, 2^249505942 is an apocalyptic number.

249505942 is a deficient number, since it is larger than the sum of its proper divisors (186585098).

249505942 is a wasteful number, since it uses less digits than its factorization.

249505942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4276 (or 4269 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 40.

The square root of 249505942 is about 15795.7570885349. The cubic root of 249505942 is about 629.5452685635.

The spelling of 249505942 in words is "two hundred forty-nine million, five hundred five thousand, nine hundred forty-two".