402343123 has 8 divisors (see below), whose sum is σ = 495191648. Its totient is φ = 318337344.

The previous prime is 402343121. The next prime is 402343177. The reversal of 402343123 is 321343204.

It is a happy number.

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

It is not a de Polignac number, because 402343123 - 2¹ = 402343121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 402343094 and 402343103.

It is not an unprimeable number, because it can be changed into a prime (402343121) 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, 2210586 + ... + 2210767.

It is an arithmetic number, because the mean of its divisors is an integer number (61898956).

Almost surely, 2^402343123 is an apocalyptic number.

402343123 is a deficient number, since it is larger than the sum of its proper divisors (92848525).

402343123 is a wasteful number, since it uses less digits than its factorization.

402343123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4421373.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 402343123 is about 20058.4925405674. The cubic root of 402343123 is about 738.2421894681.

Adding to 402343123 its reverse (321343204), we get a palindrome (723686327).

The spelling of 402343123 in words is "four hundred two million, three hundred forty-three thousand, one hundred twenty-three".