402020452 has 6 divisors (see below), whose sum is σ = 703535798. Its totient is φ = 201010224.

The previous prime is 402020441. The next prime is 402020467. The reversal of 402020452 is 254020204.

It can be written as a sum of positive squares in only one way, i.e., 393863716 + 8156736 = 19846^2 + 2856^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50252553 + ... + 50252560.

Almost surely, 2^402020452 is an apocalyptic number.

It is an amenable number.

402020452 is a deficient number, since it is larger than the sum of its proper divisors (301515346).

402020452 is a wasteful number, since it uses less digits than its factorization.

402020452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100505117 (or 100505115 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 402020452 is about 20050.4476758002. The cubic root of 402020452 is about 738.0447849478.

Adding to 402020452 its reverse (254020204), we get a palindrome (656040656).

The spelling of 402020452 in words is "four hundred two million, twenty thousand, four hundred fifty-two".