402454423 has 8 divisors (see below), whose sum is σ = 460479392. Its totient is φ = 344562336.

The previous prime is 402454337. The next prime is 402454433. The reversal of 402454423 is 324454204.

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 402454423 - 2⁹ = 402453911 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 402454391 and 402454400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402454433) 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, 26640 + ... + 38917.

It is an arithmetic number, because the mean of its divisors is an integer number (57559924).

Almost surely, 2^402454423 is an apocalyptic number.

402454423 is a deficient number, since it is larger than the sum of its proper divisors (58024969).

402454423 is an equidigital number, since it uses as much as digits as its factorization.

402454423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66441.

The product of its (nonzero) digits is 15360, while the sum is 28.

The square root of 402454423 is about 20061.2667346805. The cubic root of 402454423 is about 738.3102563954.

The spelling of 402454423 in words is "four hundred two million, four hundred fifty-four thousand, four hundred twenty-three".