972173542 has 4 divisors (see below), whose sum is σ = 1458260316. Its totient is φ = 486086770.

The previous prime is 972173539. The next prime is 972173567. The reversal of 972173542 is 245371279.

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

It is a junction number, because it is equal to n+sod(n) for n = 972173495 and 972173504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 243043384 + ... + 243043387.

It is an arithmetic number, because the mean of its divisors is an integer number (364565079).

Almost surely, 2^972173542 is an apocalyptic number.

972173542 is a deficient number, since it is larger than the sum of its proper divisors (486086774).

972173542 is a wasteful number, since it uses less digits than its factorization.

972173542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486086773.

The product of its digits is 105840, while the sum is 40.

The square root of 972173542 is about 31179.6975931454. The cubic root of 972173542 is about 990.6371241498.

The spelling of 972173542 in words is "nine hundred seventy-two million, one hundred seventy-three thousand, five hundred forty-two".