402657043 has 4 divisors (see below), whose sum is σ = 402713920. Its totient is φ = 402600168.

The previous prime is 402657011. The next prime is 402657049. The reversal of 402657043 is 340756204.

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 402657043 - 2⁵ = 402657011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 402656996 and 402657014.

It is not an unprimeable number, because it can be changed into a prime (402657049) 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, 16008 + ... + 32581.

It is an arithmetic number, because the mean of its divisors is an integer number (100678480).

Almost surely, 2^402657043 is an apocalyptic number.

402657043 is a deficient number, since it is larger than the sum of its proper divisors (56877).

402657043 is an equidigital number, since it uses as much as digits as its factorization.

402657043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56876.

The product of its (nonzero) digits is 20160, while the sum is 31.

The square root of 402657043 is about 20066.3161292749. The cubic root of 402657043 is about 738.4341390161.

The spelling of 402657043 in words is "four hundred two million, six hundred fifty-seven thousand, forty-three".