16971942 has 32 divisors (see below), whose sum is σ = 37739520. Its totient is φ = 5052960.

The previous prime is 16971919. The next prime is 16971949. The reversal of 16971942 is 24917961.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 16971942.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16971949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1092 + ... + 5927.

It is an arithmetic number, because the mean of its divisors is an integer number (1179360).

Almost surely, 2^16971942 is an apocalyptic number.

16971942 is an abundant number, since it is smaller than the sum of its proper divisors (20767578).

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

16971942 is a wasteful number, since it uses less digits than its factorization.

16971942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7068.

The product of its digits is 27216, while the sum is 39.

The square root of 16971942 is about 4119.7016882294. The cubic root of 16971942 is about 256.9866203474.

The spelling of 16971942 in words is "sixteen million, nine hundred seventy-one thousand, nine hundred forty-two".