249902 has 4 divisors (see below), whose sum is σ = 374856. Its totient is φ = 124950.

The previous prime is 249881. The next prime is 249911. The reversal of 249902 is 209942.

249902 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 209942 = 2 ⋅104971.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 249902.

It is an unprimeable number.

249902 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62474 + ... + 62477.

It is an arithmetic number, because the mean of its divisors is an integer number (93714).

2²⁴⁹⁹⁰² is an apocalyptic number.

249902 is a deficient number, since it is larger than the sum of its proper divisors (124954).

249902 is a wasteful number, since it uses less digits than its factorization.

249902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124953.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 249902 is about 499.9019903941. The cubic root of 249902 is about 62.9878199347.

The spelling of 249902 in words is "two hundred forty-nine thousand, nine hundred two".