402117671 has 8 divisors (see below), whose sum is σ = 423929184. Its totient is φ = 380666880.

The previous prime is 402117649. The next prime is 402117679. The reversal of 402117671 is 176711204.

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

It is a cyclic number.

It is not a de Polignac number, because 402117671 - 2²² = 397923367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402117679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87890 + ... + 92351.

It is an arithmetic number, because the mean of its divisors is an integer number (52991148).

Almost surely, 2^402117671 is an apocalyptic number.

402117671 is a deficient number, since it is larger than the sum of its proper divisors (21811513).

402117671 is a wasteful number, since it uses less digits than its factorization.

402117671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180361.

The product of its (nonzero) digits is 2352, while the sum is 29.

The square root of 402117671 is about 20052.8718890836. The cubic root of 402117671 is about 738.1042729602.

Adding to 402117671 its reverse (176711204), we get a palindrome (578828875).

The spelling of 402117671 in words is "four hundred two million, one hundred seventeen thousand, six hundred seventy-one".