2171461421 has 8 divisors (see below), whose sum is σ = 2187294144. Its totient is φ = 2155662720.

The previous prime is 2171461403. The next prime is 2171461423. The reversal of 2171461421 is 1241641712.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-2171461421 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 (2171461423) 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, 127421 + ... + 143453.

It is an arithmetic number, because the mean of its divisors is an integer number (273411768).

Almost surely, 2^2171461421 is an apocalyptic number.

It is an amenable number.

2171461421 is a deficient number, since it is larger than the sum of its proper divisors (15832723).

2171461421 is a wasteful number, since it uses less digits than its factorization.

2171461421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17011.

The product of its digits is 2688, while the sum is 29.

The square root of 2171461421 is about 46598.9422734036. The cubic root of 2171461421 is about 1294.9431599506.

The spelling of 2171461421 in words is "two billion, one hundred seventy-one million, four hundred sixty-one thousand, four hundred twenty-one".