249258642 has 16 divisors (see below), whose sum is σ = 498739680. Its totient is φ = 83049152.

The previous prime is 249258599. The next prime is 249258643. The reversal of 249258642 is 246852942.

249258642 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×249258642² = 124259741223368328, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 249258594 and 249258603.

It is not an unprimeable number, because it can be changed into a prime (249258643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7693 + ... + 23615.

It is an arithmetic number, because the mean of its divisors is an integer number (31171230).

Almost surely, 2^249258642 is an apocalyptic number.

249258642 is an abundant number, since it is smaller than the sum of its proper divisors (249481038).

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

249258642 is a wasteful number, since it uses less digits than its factorization.

249258642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18537.

The product of its digits is 276480, while the sum is 42.

The square root of 249258642 is about 15787.9270963607. The cubic root of 249258642 is about 629.3372067050.

The spelling of 249258642 in words is "two hundred forty-nine million, two hundred fifty-eight thousand, six hundred forty-two".