402441402412 has 24 divisors (see below), whose sum is σ = 804937704704. Its totient is φ = 172463122512.

The previous prime is 402441402403. The next prime is 402441402427. The reversal of 402441402412 is 214204144204.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (28).

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, 65898 + ... + 899569.

Almost surely, 2^402441402412 is an apocalyptic number.

It is an amenable number.

402441402412 is an abundant number, since it is smaller than the sum of its proper divisors (402496302292).

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

402441402412 is a wasteful number, since it uses less digits than its factorization.

402441402412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 980365 (or 980363 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 28.

Adding to 402441402412 its reverse (214204144204), we get a palindrome (616645546616).

The spelling of 402441402412 in words is "four hundred two billion, four hundred forty-one million, four hundred two thousand, four hundred twelve".