172494542 has 16 divisors (see below), whose sum is σ = 287591472. Its totient is φ = 76926720.

The previous prime is 172494541. The next prime is 172494551. The reversal of 172494542 is 245494271.

It is a junction number, because it is equal to n+sod(n) for n = 172494496 and 172494505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172494541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72803 + ... + 75134.

It is an arithmetic number, because the mean of its divisors is an integer number (17974467).

Almost surely, 2^172494542 is an apocalyptic number.

172494542 is a deficient number, since it is larger than the sum of its proper divisors (115096930).

172494542 is a wasteful number, since it uses less digits than its factorization.

172494542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148003.

The product of its digits is 80640, while the sum is 38.

The square root of 172494542 is about 13133.7177524112. The cubic root of 172494542 is about 556.6622695977.

The spelling of 172494542 in words is "one hundred seventy-two million, four hundred ninety-four thousand, five hundred forty-two".