97172942 has 4 divisors (see below), whose sum is σ = 145759416. Its totient is φ = 48586470.

The previous prime is 97172917. The next prime is 97172963. The reversal of 97172942 is 24927179.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24927179 = 127 ⋅196277.

It is a self number, because there is not a number n which added to its sum of digits gives 97172942.

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, 24293234 + ... + 24293237.

It is an arithmetic number, because the mean of its divisors is an integer number (36439854).

Almost surely, 2^97172942 is an apocalyptic number.

97172942 is a deficient number, since it is larger than the sum of its proper divisors (48586474).

97172942 is a wasteful number, since it uses less digits than its factorization.

97172942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48586473.

The product of its digits is 63504, while the sum is 41.

The square root of 97172942 is about 9857.6336917132. The cubic root of 97172942 is about 459.7429912778.

The spelling of 97172942 in words is "ninety-seven million, one hundred seventy-two thousand, nine hundred forty-two".