402145392 has 160 divisors (see below), whose sum is σ = 1188495360. Its totient is φ = 116064000.

The previous prime is 402145379. The next prime is 402145439. The reversal of 402145392 is 293541204.

It is a congruent number.

It is an unprimeable number.

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, 1292917 + ... + 1293227.

It is an arithmetic number, because the mean of its divisors is an integer number (7428096).

Almost surely, 2^402145392 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 402145392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (594247680).

402145392 is an abundant number, since it is smaller than the sum of its proper divisors (786349968).

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

402145392 is a wasteful number, since it uses less digits than its factorization.

402145392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443 (or 437 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 402145392 is about 20053.5630749251. The cubic root of 402145392 is about 738.1212335995.

Adding to 402145392 its reverse (293541204), we get a palindrome (695686596).

The spelling of 402145392 in words is "four hundred two million, one hundred forty-five thousand, three hundred ninety-two".