249100642 has 16 divisors (see below), whose sum is σ = 427625280. Its totient is φ = 106608528.

The previous prime is 249100639. The next prime is 249100651. The reversal of 249100642 is 246001942.

It is a super-2 number, since 2×249100642² = 124102259689624328, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 249100642.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1693 + ... + 22384.

It is an arithmetic number, because the mean of its divisors is an integer number (26726580).

Almost surely, 2^249100642 is an apocalyptic number.

249100642 is a deficient number, since it is larger than the sum of its proper divisors (178524638).

249100642 is a wasteful number, since it uses less digits than its factorization.

249100642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24825.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 249100642 is about 15782.9224796930. The cubic root of 249100642 is about 629.2042038995.

The spelling of 249100642 in words is "two hundred forty-nine million, one hundred thousand, six hundred forty-two".