424172091 has 32 divisors (see below), whose sum is σ = 661893120. Its totient is φ = 236605824.

The previous prime is 424172087. The next prime is 424172159. The reversal of 424172091 is 190271424.

It is not a de Polignac number, because 424172091 - 2² = 424172087 is a prime.

It is not an unprimeable number, because it can be changed into a prime (424172011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 247345 + ... + 249053.

It is an arithmetic number, because the mean of its divisors is an integer number (20684160).

Almost surely, 2^424172091 is an apocalyptic number.

424172091 is a deficient number, since it is larger than the sum of its proper divisors (237721029).

424172091 is a wasteful number, since it uses less digits than its factorization.

424172091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1995.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 424172091 is about 20595.4385969321. The cubic root of 424172091 is about 751.3587759285.

The spelling of 424172091 in words is "four hundred twenty-four million, one hundred seventy-two thousand, ninety-one".