402741252 has 72 divisors (see below), whose sum is σ = 1086845760. Its totient is φ = 125375040.

The previous prime is 402741211. The next prime is 402741253. The reversal of 402741252 is 252147204.

402741252 is a `hidden beast` number, since 402 + 7 + 4 + 1 + 252 = 666.

It is not an unprimeable number, because it can be changed into a prime (402741253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44418 + ... + 52710.

It is an arithmetic number, because the mean of its divisors is an integer number (15095080).

Almost surely, 2^402741252 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 402741252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (543422880).

402741252 is an abundant number, since it is smaller than the sum of its proper divisors (684104508).

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

402741252 is a wasteful number, since it uses less digits than its factorization.

402741252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8393 (or 8388 counting only the distinct ones).

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

The square root of 402741252 is about 20068.4142871329. The cubic root of 402741252 is about 738.4856124864.

Adding to 402741252 its reverse (252147204), we get a palindrome (654888456).

The spelling of 402741252 in words is "four hundred two million, seven hundred forty-one thousand, two hundred fifty-two".