421140271117 has 4 divisors (see below), whose sum is σ = 421142752576. Its totient is φ = 421137789660.

The previous prime is 421140271061. The next prime is 421140271127. The reversal of 421140271117 is 711172041124.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421140271117 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 (421140271127) 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, 965859 + ... + 1332352.

It is an arithmetic number, because the mean of its divisors is an integer number (105285688144).

Almost surely, 2^421140271117 is an apocalyptic number.

It is an amenable number.

421140271117 is a deficient number, since it is larger than the sum of its proper divisors (2481459).

421140271117 is a wasteful number, since it uses less digits than its factorization.

421140271117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2481458.

The product of its (nonzero) digits is 3136, while the sum is 31.

The spelling of 421140271117 in words is "four hundred twenty-one billion, one hundred forty million, two hundred seventy-one thousand, one hundred seventeen".