17942279942 has 4 divisors (see below), whose sum is σ = 26913419916. Its totient is φ = 8971139970.

The previous prime is 17942279917. The next prime is 17942279951. The reversal of 17942279942 is 24997224971.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4485569984 + ... + 4485569987.

It is an arithmetic number, because the mean of its divisors is an integer number (6728354979).

Almost surely, 2^17942279942 is an apocalyptic number.

17942279942 is a deficient number, since it is larger than the sum of its proper divisors (8971139974).

17942279942 is an equidigital number, since it uses as much as digits as its factorization.

17942279942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8971139973.

The product of its digits is 4572288, while the sum is 56.

The spelling of 17942279942 in words is "seventeen billion, nine hundred forty-two million, two hundred seventy-nine thousand, nine hundred forty-two".