402452120 has 32 divisors (see below), whose sum is σ = 1034877600. Its totient is φ = 137983488.

The previous prime is 402452081. The next prime is 402452147. The reversal of 402452120 is 21254204.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 402452092 and 402452101.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 718385 + ... + 718944.

It is an arithmetic number, because the mean of its divisors is an integer number (32339925).

Almost surely, 2^402452120 is an apocalyptic number.

402452120 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

402452120 is an abundant number, since it is smaller than the sum of its proper divisors (632425480).

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

402452120 is a wasteful number, since it uses less digits than its factorization.

402452120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1437347 (or 1437343 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 402452120 is about 20061.2093354314. The cubic root of 402452120 is about 738.3088480937.

The spelling of 402452120 in words is "four hundred two million, four hundred fifty-two thousand, one hundred twenty".