402124444 has 24 divisors (see below), whose sum is σ = 716579136. Its totient is φ = 197400000.

The previous prime is 402124441. The next prime is 402124447. The reversal of 402124444 is 444421204.

It is an interprime number because it is at equal distance from previous prime (402124441) and next prime (402124447).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402124441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169869 + ... + 172219.

It is an arithmetic number, because the mean of its divisors is an integer number (29857464).

Almost surely, 2^402124444 is an apocalyptic number.

It is an amenable number.

402124444 is a deficient number, since it is larger than the sum of its proper divisors (314454692).

402124444 is a wasteful number, since it uses less digits than its factorization.

402124444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3117 (or 3115 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 25.

The square root of 402124444 is about 20053.0407669261. The cubic root of 402124444 is about 738.1084169811.

Adding to 402124444 its reverse (444421204), we get a palindrome (846545648).

The spelling of 402124444 in words is "four hundred two million, one hundred twenty-four thousand, four hundred forty-four".