249330042 has 32 divisors (see below), whose sum is σ = 596688960. Its totient is φ = 76716720.

The previous prime is 249330019. The next prime is 249330101. The reversal of 249330042 is 240033942.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 249329988 and 249330015.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 176884 + ... + 178287.

It is an arithmetic number, because the mean of its divisors is an integer number (18646530).

Almost surely, 2^249330042 is an apocalyptic number.

249330042 is an abundant number, since it is smaller than the sum of its proper divisors (347358918).

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

249330042 is a wasteful number, since it uses less digits than its factorization.

249330042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355195 (or 355189 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 249330042 is about 15790.1881559404. The cubic root of 249330042 is about 629.3972920664.

Adding to 249330042 its reverse (240033942), we get a palindrome (489363984).

The spelling of 249330042 in words is "two hundred forty-nine million, three hundred thirty thousand, forty-two".