402231151432421 has 8 divisors (see below), whose sum is σ = 425892911713560. Its totient is φ = 378569513852928.

The previous prime is 402231151432381. The next prime is 402231151432447. The reversal of 402231151432421 is 124234151132204.

It can be written as a sum of positive squares in 4 ways, for example, as 712312368196 + 401518839064225 = 843986^2 + 20037935^2 .

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 402231151432421 - 2²⁶ = 402231084323557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402231151422421) 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, 23883356 + ... + 37079333.

It is an arithmetic number, because the mean of its divisors is an integer number (53236613964195).

Almost surely, 2^{402231151432421} is an apocalyptic number.

It is an amenable number.

402231151432421 is a deficient number, since it is larger than the sum of its proper divisors (23661760281139).

402231151432421 is a wasteful number, since it uses less digits than its factorization.

402231151432421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61350823.

The product of its (nonzero) digits is 46080, while the sum is 35.

The spelling of 402231151432421 in words is "four hundred two trillion, two hundred thirty-one billion, one hundred fifty-one million, four hundred thirty-two thousand, four hundred twenty-one".