402144412021 has 8 divisors (see below), whose sum is σ = 440929916064. Its totient is φ = 363730061520.

The previous prime is 402144412003. The next prime is 402144412027. The reversal of 402144412021 is 120214441204.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 402144412021 - 2⁵ = 402144411989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402144412027) 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, 92786115 + ... + 92790448.

It is an arithmetic number, because the mean of its divisors is an integer number (55116239508).

Almost surely, 2^402144412021 is an apocalyptic number.

It is an amenable number.

402144412021 is a deficient number, since it is larger than the sum of its proper divisors (38785504043).

402144412021 is a wasteful number, since it uses less digits than its factorization.

402144412021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185576771.

The product of its (nonzero) digits is 2048, while the sum is 25.

Adding to 402144412021 its reverse (120214441204), we get a palindrome (522358853225).

The spelling of 402144412021 in words is "four hundred two billion, one hundred forty-four million, four hundred twelve thousand, twenty-one".