173542138 has 16 divisors (see below), whose sum is σ = 324546624. Its totient is φ = 67613760.

The previous prime is 173542093. The next prime is 173542141. The reversal of 173542138 is 831245371.

It is a super-2 number, since 2×173542138² = 60233747323222088, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 563295 + ... + 563602.

It is an arithmetic number, because the mean of its divisors is an integer number (20284164).

Almost surely, 2^173542138 is an apocalyptic number.

173542138 is a deficient number, since it is larger than the sum of its proper divisors (151004486).

173542138 is a wasteful number, since it uses less digits than its factorization.

173542138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1126917.

The product of its digits is 20160, while the sum is 34.

The square root of 173542138 is about 13173.5393118175. The cubic root of 173542138 is about 557.7869053524.

The spelling of 173542138 in words is "one hundred seventy-three million, five hundred forty-two thousand, one hundred thirty-eight".