402441012 has 18 divisors (see below), whose sum is σ = 1017281538. Its totient is φ = 134146992.

The previous prime is 402441007. The next prime is 402441023. The reversal of 402441012 is 210144204.

It can be written as a sum of positive squares in only one way, i.e., 361532196 + 40908816 = 19014^2 + 6396^2 .

It is a tau number, because it is divible by the number of its divisors (18).

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

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 5589423 + ... + 5589494.

It is an arithmetic number, because the mean of its divisors is an integer number (56515641).

Almost surely, 2^402441012 is an apocalyptic number.

It is an amenable number.

402441012 is an abundant number, since it is smaller than the sum of its proper divisors (614840526).

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

402441012 is a wasteful number, since it uses less digits than its factorization.

402441012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11178927 (or 11178922 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 402441012 is about 20060.9324808195. The cubic root of 402441012 is about 738.3020553932.

Adding to 402441012 its reverse (210144204), we get a palindrome (612585216).

The spelling of 402441012 in words is "four hundred two million, four hundred forty-one thousand, twelve".