39142442 has 8 divisors (see below), whose sum is σ = 59540832. Its totient is φ = 19295500.

The previous prime is 39142417. The next prime is 39142447. The reversal of 39142442 is 24424193.

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

It is not an unprimeable number, because it can be changed into a prime (39142447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137684 + ... + 137967.

It is an arithmetic number, because the mean of its divisors is an integer number (7442604).

Almost surely, 2^39142442 is an apocalyptic number.

39142442 is a deficient number, since it is larger than the sum of its proper divisors (20398390).

39142442 is a wasteful number, since it uses less digits than its factorization.

39142442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275724.

The product of its digits is 6912, while the sum is 29.

The square root of 39142442 is about 6256.3920912935. The cubic root of 39142442 is about 339.5335067279.

The spelling of 39142442 in words is "thirty-nine million, one hundred forty-two thousand, four hundred forty-two".