402021552 has 40 divisors (see below), whose sum is σ = 1044580464. Its totient is φ = 133229824.

The previous prime is 402021541. The next prime is 402021611. The reversal of 402021552 is 255120204.

It is a happy 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 7 ways as a sum of consecutive naturals, for example, 15903 + ... + 32510.

Almost surely, 2^402021552 is an apocalyptic number.

It is an amenable number.

402021552 is an abundant number, since it is smaller than the sum of its proper divisors (642558912).

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

402021552 is a wasteful number, since it uses less digits than its factorization.

402021552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48597 (or 48591 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 402021552 is about 20050.4751065904. The cubic root of 402021552 is about 738.0454580881.

Adding to 402021552 its reverse (255120204), we get a palindrome (657141756).

The spelling of 402021552 in words is "four hundred two million, twenty-one thousand, five hundred fifty-two".