249420442 has 8 divisors (see below), whose sum is σ = 375737076. Its totient is φ = 124174752.

The previous prime is 249420439. The next prime is 249420461. The reversal of 249420442 is 244024942.

It can be written as a sum of positive squares in 2 ways, for example, as 246458601 + 2961841 = 15699^2 + 1721^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 267153 + ... + 268084.

Almost surely, 2^249420442 is an apocalyptic number.

249420442 is a deficient number, since it is larger than the sum of its proper divisors (126316634).

249420442 is a wasteful number, since it uses less digits than its factorization.

249420442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535472.

The product of its (nonzero) digits is 18432, while the sum is 31.

The square root of 249420442 is about 15793.0504336559. The cubic root of 249420442 is about 629.4733500759.

The spelling of 249420442 in words is "two hundred forty-nine million, four hundred twenty thousand, four hundred forty-two".