172742530 has 16 divisors (see below), whose sum is σ = 311428800. Its totient is φ = 68987632.

The previous prime is 172742519. The next prime is 172742533. The reversal of 172742530 is 35247271.

172742530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 172742492 and 172742501.

It is not an unprimeable number, because it can be changed into a prime (172742533) 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, 6880 + ... + 19819.

It is an arithmetic number, because the mean of its divisors is an integer number (19464300).

Almost surely, 2^172742530 is an apocalyptic number.

172742530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

172742530 is a deficient number, since it is larger than the sum of its proper divisors (138686270).

172742530 is a wasteful number, since it uses less digits than its factorization.

172742530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27353.

The product of its (nonzero) digits is 11760, while the sum is 31.

The square root of 172742530 is about 13143.1552528303. The cubic root of 172742530 is about 556.9289050132.

The spelling of 172742530 in words is "one hundred seventy-two million, seven hundred forty-two thousand, five hundred thirty".