402012460 has 48 divisors (see below), whose sum is σ = 860269536. Its totient is φ = 157773312.

The previous prime is 402012451. The next prime is 402012463. The reversal of 402012460 is 64210204.

It is a super-2 number, since 2×402012460² = 323228035990503200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (402012463) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 330814 + ... + 332026.

It is an arithmetic number, because the mean of its divisors is an integer number (17922282).

Almost surely, 2^402012460 is an apocalyptic number.

It is an amenable number.

402012460 is an abundant number, since it is smaller than the sum of its proper divisors (458257076).

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

402012460 is a wasteful number, since it uses less digits than its factorization.

402012460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1522 (or 1520 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 402012460 is about 20050.2483775139. The cubic root of 402012460 is about 738.0398942405.

Adding to 402012460 its reverse (64210204), we get a palindrome (466222664).

The spelling of 402012460 in words is "four hundred two million, twelve thousand, four hundred sixty".