402660043 has 8 divisors (see below), whose sum is σ = 408849408. Its totient is φ = 396489024.

The previous prime is 402660007. The next prime is 402660047. The reversal of 402660043 is 340066204.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402660043 is a prime.

It is a super-2 number, since 2×402660043² = 324270220457523698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402660047) 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, 43446 + ... + 51892.

It is an arithmetic number, because the mean of its divisors is an integer number (51106176).

Almost surely, 2^402660043 is an apocalyptic number.

402660043 is a deficient number, since it is larger than the sum of its proper divisors (6189365).

402660043 is an equidigital number, since it uses as much as digits as its factorization.

402660043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9173.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 402660043 is about 20066.3908812721. The cubic root of 402660043 is about 738.4359729150.

The spelling of 402660043 in words is "four hundred two million, six hundred sixty thousand, forty-three".