17972542 has 8 divisors (see below), whose sum is σ = 30810096. Its totient is φ = 7702512.

The previous prime is 17972509. The next prime is 17972567. The reversal of 17972542 is 24527971.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 641863 + ... + 641890.

It is an arithmetic number, because the mean of its divisors is an integer number (3851262).

Almost surely, 2^17972542 is an apocalyptic number.

17972542 is a deficient number, since it is larger than the sum of its proper divisors (12837554).

17972542 is a wasteful number, since it uses less digits than its factorization.

17972542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1283762.

The product of its digits is 35280, while the sum is 37.

The square root of 17972542 is about 4239.4034957763. The cubic root of 17972542 is about 261.9408117566.

The spelling of 17972542 in words is "seventeen million, nine hundred seventy-two thousand, five hundred forty-two".