153939242 has 32 divisors (see below), whose sum is σ = 246343680. Its totient is φ = 72034560.

The previous prime is 153939223. The next prime is 153939257. The reversal of 153939242 is 242939351.

It is a happy number.

153939242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 153939196 and 153939205.

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, 259298 + ... + 259890.

It is an arithmetic number, because the mean of its divisors is an integer number (7698240).

Almost surely, 2^153939242 is an apocalyptic number.

153939242 is a deficient number, since it is larger than the sum of its proper divisors (92404438).

153939242 is a wasteful number, since it uses less digits than its factorization.

153939242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 758.

The product of its digits is 58320, while the sum is 38.

The square root of 153939242 is about 12407.2253949060. The cubic root of 153939242 is about 535.9403405976.

The spelling of 153939242 in words is "one hundred fifty-three million, nine hundred thirty-nine thousand, two hundred forty-two".