402425712 has 160 divisors (see below), whose sum is σ = 1255752960. Its totient is φ = 122653440.

The previous prime is 402425707. The next prime is 402425729. The reversal of 402425712 is 217524204.

402425712 is a `hidden beast` number, since 402 + 4 + 257 + 1 + 2 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 735423 + ... + 735969.

It is an arithmetic number, because the mean of its divisors is an integer number (7848456).

Almost surely, 2^402425712 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 402425712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (627876480).

402425712 is an abundant number, since it is smaller than the sum of its proper divisors (853327248).

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

402425712 is a wasteful number, since it uses less digits than its factorization.

402425712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708 (or 696 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 27.

The square root of 402425712 is about 20060.5511389892. The cubic root of 402425712 is about 738.2926990202.

Adding to 402425712 its reverse (217524204), we get a palindrome (619949916).

It can be divided in two parts, 40242 and 5712, that added together give a palindrome (45954).

The spelling of 402425712 in words is "four hundred two million, four hundred twenty-five thousand, seven hundred twelve".