172420754 has 16 divisors (see below), whose sum is σ = 282449376. Its totient is φ = 78288000.

The previous prime is 172420751. The next prime is 172420771. The reversal of 172420754 is 457024271.

172420754 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 172420754.

It is not an unprimeable number, because it can be changed into a prime (172420751) 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, 19394 + ... + 26850.

It is an arithmetic number, because the mean of its divisors is an integer number (17653086).

Almost surely, 2^172420754 is an apocalyptic number.

172420754 is a deficient number, since it is larger than the sum of its proper divisors (110028622).

172420754 is a wasteful number, since it uses less digits than its factorization.

172420754 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8521.

The product of its (nonzero) digits is 15680, while the sum is 32.

The square root of 172420754 is about 13130.9083463407. The cubic root of 172420754 is about 556.5828837934.

The spelling of 172420754 in words is "one hundred seventy-two million, four hundred twenty thousand, seven hundred fifty-four".