402120323 has 8 divisors (see below), whose sum is σ = 440427456. Its totient is φ = 364105000.

The previous prime is 402120319. The next prime is 402120337. The reversal of 402120323 is 323021204.

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 402120323 - 2² = 402120319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402120373) 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, 70061 + ... + 75582.

It is an arithmetic number, because the mean of its divisors is an integer number (55053432).

Almost surely, 2^402120323 is an apocalyptic number.

402120323 is a deficient number, since it is larger than the sum of its proper divisors (38307133).

402120323 is a wasteful number, since it uses less digits than its factorization.

402120323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145905.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 402120323 is about 20052.9380141664. The cubic root of 402120323 is about 738.1058955766.

Adding to 402120323 its reverse (323021204), we get a palindrome (725141527).

The spelling of 402120323 in words is "four hundred two million, one hundred twenty thousand, three hundred twenty-three".