402012324 has 36 divisors (see below), whose sum is σ = 1161369664. Its totient is φ = 114860592.

The previous prime is 402012323. The next prime is 402012337. The reversal of 402012324 is 423210204.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×402012324² = 323227817295761952, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 402012297 and 402012306.

It is not an unprimeable number, because it can be changed into a prime (402012323) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 797392 + ... + 797895.

Almost surely, 2^402012324 is an apocalyptic number.

It is an amenable number.

402012324 is an abundant number, since it is smaller than the sum of its proper divisors (759357340).

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

402012324 is a wasteful number, since it uses less digits than its factorization.

402012324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1595304 (or 1595299 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 402012324 is about 20050.2449860345. The cubic root of 402012324 is about 738.0398110147.

Adding to 402012324 its reverse (423210204), we get a palindrome (825222528).

The spelling of 402012324 in words is "four hundred two million, twelve thousand, three hundred twenty-four".