402021042413 has 32 divisors (see below), whose sum is σ = 428549603328. Its totient is φ = 376604121600.

The previous prime is 402021042383. The next prime is 402021042431. The reversal of 402021042413 is 314240120204.

It is a cyclic number.

It is not a de Polignac number, because 402021042413 - 2¹⁸ = 402020780269 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402021042463) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27106706 + ... + 27121532.

It is an arithmetic number, because the mean of its divisors is an integer number (13392175104).

Almost surely, 2^402021042413 is an apocalyptic number.

It is an amenable number.

402021042413 is a deficient number, since it is larger than the sum of its proper divisors (26528560915).

402021042413 is a wasteful number, since it uses less digits than its factorization.

402021042413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15153.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 402021042413 its reverse (314240120204), we get a palindrome (716261162617).

The spelling of 402021042413 in words is "four hundred two billion, twenty-one million, forty-two thousand, four hundred thirteen".