402420403134323 has 64 divisors (see below), whose sum is σ = 470752819200000. Its totient is φ = 336920014024704.

The previous prime is 402420403134319. The next prime is 402420403134331. The reversal of 402420403134323 is 323431304024204.

It is a cyclic number.

It is not a de Polignac number, because 402420403134323 - 2² = 402420403134319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402420403134223) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 80115546590 + ... + 80115551612.

It is an arithmetic number, because the mean of its divisors is an integer number (7355512800000).

Almost surely, 2^{402420403134323} is an apocalyptic number.

402420403134323 is a deficient number, since it is larger than the sum of its proper divisors (68332416065677).

402420403134323 is a wasteful number, since it uses less digits than its factorization.

402420403134323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9804.

The product of its (nonzero) digits is 165888, while the sum is 35.

Adding to 402420403134323 its reverse (323431304024204), we get a palindrome (725851707158527).

The spelling of 402420403134323 in words is "four hundred two trillion, four hundred twenty billion, four hundred three million, one hundred thirty-four thousand, three hundred twenty-three".