402118047 has 8 divisors (see below), whose sum is σ = 595730480. Its totient is φ = 268078680.

The previous prime is 402117997. The next prime is 402118061. The reversal of 402118047 is 740811204.

It is not a de Polignac number, because 402118047 - 2¹² = 402113951 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 14893261 = 402118047 / (4 + 0 + 2 + 1 + 1 + 8 + 0 + 4 + 7).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 402118047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402118097) 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, 7446604 + ... + 7446657.

It is an arithmetic number, because the mean of its divisors is an integer number (74466310).

Almost surely, 2^402118047 is an apocalyptic number.

402118047 is a deficient number, since it is larger than the sum of its proper divisors (193612433).

402118047 is a wasteful number, since it uses less digits than its factorization.

402118047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14893270 (or 14893264 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 402118047 is about 20052.8812642972. The cubic root of 402118047 is about 738.1045030148.

The spelling of 402118047 in words is "four hundred two million, one hundred eighteen thousand, forty-seven".