239961642 has 16 divisors (see below), whose sum is σ = 480149472. Its totient is φ = 79949520.

The previous prime is 239961619. The next prime is 239961653. The reversal of 239961642 is 246169932.

It is a junction number, because it is equal to n+sod(n) for n = 239961594 and 239961603.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6417 + ... + 22827.

It is an arithmetic number, because the mean of its divisors is an integer number (30009342).

Almost surely, 2^239961642 is an apocalyptic number.

239961642 is an abundant number, since it is smaller than the sum of its proper divisors (240187830).

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

239961642 is a wasteful number, since it uses less digits than its factorization.

239961642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18853.

The product of its digits is 139968, while the sum is 42.

The square root of 239961642 is about 15490.6953362333. The cubic root of 239961642 is about 621.4133918645.

The spelling of 239961642 in words is "two hundred thirty-nine million, nine hundred sixty-one thousand, six hundred forty-two".