423157056 has 224 divisors, whose sum is σ = 1371356160. Its totient is φ = 112472064.

The previous prime is 423157051. The next prime is 423157127. The reversal of 423157056 is 650751324.

It is a tau number, because it is divible by the number of its divisors (224).

It is a super-3 number, since 3×423157056³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423157051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1864015 + ... + 1864241.

Almost surely, 2^423157056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 423157056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (685678080).

423157056 is an abundant number, since it is smaller than the sum of its proper divisors (948199104).

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

423157056 is a wasteful number, since it uses less digits than its factorization.

423157056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341 (or 331 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 33.

The square root of 423157056 is about 20570.7816088743. The cubic root of 423157056 is about 750.7589685854.

The spelling of 423157056 in words is "four hundred twenty-three million, one hundred fifty-seven thousand, fifty-six".