172577142 has 48 divisors (see below), whose sum is σ = 404651520. Its totient is φ = 55021032.

The previous prime is 172577137. The next prime is 172577147. The reversal of 172577142 is 241775271.

172577142 is a `hidden beast` number, since 1 + 72 + 577 + 14 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (172577137) and next prime (172577147).

It is a junction number, because it is equal to n+sod(n) for n = 172577097 and 172577106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172577147) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 3459 + ... + 18897.

It is an arithmetic number, because the mean of its divisors is an integer number (8430240).

Almost surely, 2^172577142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 172577142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (202325760).

172577142 is an abundant number, since it is smaller than the sum of its proper divisors (232074378).

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

172577142 is a wasteful number, since it uses less digits than its factorization.

172577142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15479 (or 15467 counting only the distinct ones).

The product of its digits is 27440, while the sum is 36.

The square root of 172577142 is about 13136.8619540589. The cubic root of 172577142 is about 556.7511090581.

The spelling of 172577142 in words is "one hundred seventy-two million, five hundred seventy-seven thousand, one hundred forty-two".