402410345120021 has 8 divisors (see below), whose sum is σ = 459898654753344. Its totient is φ = 344922314855040.

The previous prime is 402410345119819. The next prime is 402410345120023. The reversal of 402410345120021 is 120021543014204.

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 402410345120021 - 2⁴⁶ = 332041600942357 is a prime.

It is a super-2 number, since 2×402410345120021² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402410345120023) 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, 66746300 + ... + 72525093.

It is an arithmetic number, because the mean of its divisors is an integer number (57487331844168).

Almost surely, 2^{402410345120021} is an apocalyptic number.

It is an amenable number.

402410345120021 is a deficient number, since it is larger than the sum of its proper divisors (57488309633323).

402410345120021 is a wasteful number, since it uses less digits than its factorization.

402410345120021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139684171.

The product of its (nonzero) digits is 7680, while the sum is 29.

Adding to 402410345120021 its reverse (120021543014204), we get a palindrome (522431888134225).

The spelling of 402410345120021 in words is "four hundred two trillion, four hundred ten billion, three hundred forty-five million, one hundred twenty thousand, twenty-one".