42939642 has 8 divisors (see below), whose sum is σ = 85879296. Its totient is φ = 14313212.

The previous prime is 42939613. The next prime is 42939653. The reversal of 42939642 is 24693924.

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

42939642 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 42939642.

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, 3578298 + ... + 3578309.

It is an arithmetic number, because the mean of its divisors is an integer number (10734912).

Almost surely, 2^42939642 is an apocalyptic number.

42939642 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

42939642 is a wasteful number, since it uses less digits than its factorization.

42939642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7156612.

The product of its digits is 93312, while the sum is 39.

The square root of 42939642 is about 6552.8346537968. The cubic root of 42939642 is about 350.1758082737.

The spelling of 42939642 in words is "forty-two million, nine hundred thirty-nine thousand, six hundred forty-two".