249401242 has 8 divisors (see below), whose sum is σ = 374991732. Its totient is φ = 124404000.

The previous prime is 249401233. The next prime is 249401263. The reversal of 249401242 is 242104942.

249401242 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 228342321 + 21058921 = 15111^2 + 4589^2 .

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

It is a super-2 number, since 2×249401242² = 124401959022285128, 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 249401242.

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, 147259 + ... + 148942.

Almost surely, 2^249401242 is an apocalyptic number.

249401242 is a deficient number, since it is larger than the sum of its proper divisors (125590490).

249401242 is a wasteful number, since it uses less digits than its factorization.

249401242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296624.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 249401242 is about 15792.4425596549. The cubic root of 249401242 is about 629.4571976997.

The spelling of 249401242 in words is "two hundred forty-nine million, four hundred one thousand, two hundred forty-two".