421002117 has 12 divisors (see below), whose sum is σ = 630637280. Its totient is φ = 280667916.

The previous prime is 421002091. The next prime is 421002119. The reversal of 421002117 is 711200124.

It is not a de Polignac number, because 421002117 - 2⁷ = 421001989 is a prime.

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 421002117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421002119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 866017 + ... + 866502.

Almost surely, 2^421002117 is an apocalyptic number.

It is an amenable number.

421002117 is a deficient number, since it is larger than the sum of its proper divisors (209635163).

421002117 is an equidigital number, since it uses as much as digits as its factorization.

421002117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1732534 (or 1732522 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

The square root of 421002117 is about 20518.3361167518. The cubic root of 421002117 is about 749.4823788400.

The spelling of 421002117 in words is "four hundred twenty-one million, two thousand, one hundred seventeen".