402312043 has 4 divisors (see below), whose sum is σ = 459785200. Its totient is φ = 344838888.

The previous prime is 402312037. The next prime is 402312047. The reversal of 402312043 is 340213204.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 402312043 - 2⁵ = 402312011 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 402312043.

It is not an unprimeable number, because it can be changed into a prime (402312047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28736568 + ... + 28736581.

It is an arithmetic number, because the mean of its divisors is an integer number (114946300).

Almost surely, 2^402312043 is an apocalyptic number.

402312043 is a deficient number, since it is larger than the sum of its proper divisors (57473157).

402312043 is an equidigital number, since it uses as much as digits as its factorization.

402312043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57473156.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 402312043 is about 20057.7177914139. The cubic root of 402312043 is about 738.2231798577.

Adding to 402312043 its reverse (340213204), we get a palindrome (742525247).

It can be divided in two parts, 402 and 312043, that added together give a triangular number (312445 = T₇₉₀).

The spelling of 402312043 in words is "four hundred two million, three hundred twelve thousand, forty-three".