426401172 has 60 divisors (see below), whose sum is σ = 1144856020. Its totient is φ = 138288384.

The previous prime is 426401153. The next prime is 426401179. The reversal of 426401172 is 271104624.

426401172 is a `hidden beast` number, since 4 + 2 + 640 + 1 + 17 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 401361156 + 25040016 = 20034^2 + 5004^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426401179) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5797 + ... + 29772.

Almost surely, 2^426401172 is an apocalyptic number.

It is an amenable number.

426401172 is an abundant number, since it is smaller than the sum of its proper divisors (718454848).

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

426401172 is a wasteful number, since it uses less digits than its factorization.

426401172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35622 (or 35611 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 426401172 is about 20649.4835770777. The cubic root of 426401172 is about 752.6726406761.

Adding to 426401172 its reverse (271104624), we get a palindrome (697505796).

The spelling of 426401172 in words is "four hundred twenty-six million, four hundred one thousand, one hundred seventy-two".