402688428423 has 8 divisors (see below), whose sum is σ = 536923577088. Its totient is φ = 268456116024.

The previous prime is 402688428419. The next prime is 402688428427. The reversal of 402688428423 is 324824886204.

It is an interprime number because it is at equal distance from previous prime (402688428419) and next prime (402688428427).

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

It is not a de Polignac number, because 402688428423 - 2² = 402688428419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402688428427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 352111 + ... + 964032.

It is an arithmetic number, because the mean of its divisors is an integer number (67115447136).

Almost surely, 2^402688428423 is an apocalyptic number.

402688428423 is a deficient number, since it is larger than the sum of its proper divisors (134235148665).

402688428423 is a wasteful number, since it uses less digits than its factorization.

402688428423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1418133.

The product of its (nonzero) digits is 4718592, while the sum is 51.

The spelling of 402688428423 in words is "four hundred two billion, six hundred eighty-eight million, four hundred twenty-eight thousand, four hundred twenty-three".