172542230 has 96 divisors (see below), whose sum is σ = 390044160. Its totient is φ = 54613440.

The previous prime is 172542203. The next prime is 172542233. The reversal of 172542230 is 32245271.

It is a super-2 number, since 2×172542230² = 59541642266745800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 172542230.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172542233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 400115 + ... + 400545.

It is an arithmetic number, because the mean of its divisors is an integer number (4062960).

Almost surely, 2^172542230 is an apocalyptic number.

172542230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

172542230 is an abundant number, since it is smaller than the sum of its proper divisors (217501930).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

172542230 is a wasteful number, since it uses less digits than its factorization.

172542230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514 (or 507 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 172542230 is about 13135.5331068061. The cubic root of 172542230 is about 556.7135633257.

The spelling of 172542230 in words is "one hundred seventy-two million, five hundred forty-two thousand, two hundred thirty".