172421366 has 8 divisors (see below), whose sum is σ = 278526864. Its totient is φ = 79579080.

The previous prime is 172421329. The next prime is 172421383. The reversal of 172421366 is 663124271.

172421366 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3315770 + ... + 3315821.

It is an arithmetic number, because the mean of its divisors is an integer number (34815858).

Almost surely, 2^172421366 is an apocalyptic number.

172421366 is a deficient number, since it is larger than the sum of its proper divisors (106105498).

172421366 is a wasteful number, since it uses less digits than its factorization.

172421366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6631606.

The product of its digits is 12096, while the sum is 32.

The square root of 172421366 is about 13130.9316501153. The cubic root of 172421366 is about 556.5835423149.

The spelling of 172421366 in words is "one hundred seventy-two million, four hundred twenty-one thousand, three hundred sixty-six".