421142183181 has 24 divisors (see below), whose sum is σ = 620074859040. Its totient is φ = 275383188576.

The previous prime is 421142183177. The next prime is 421142183191. The reversal of 421142183181 is 181381241124.

421142183181 is a `hidden beast` number, since 4 + 211 + 421 + 8 + 3 + 18 + 1 = 666.

It is not a de Polignac number, because 421142183181 - 2² = 421142183177 is a prime.

It is a super-2 number, since 2×421142183181² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421142183141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1924146 + ... + 2131811.

It is an arithmetic number, because the mean of its divisors is an integer number (25836452460).

Almost surely, 2^421142183181 is an apocalyptic number.

It is an amenable number.

421142183181 is a deficient number, since it is larger than the sum of its proper divisors (198932675859).

421142183181 is a wasteful number, since it uses less digits than its factorization.

421142183181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4056185 (or 4056182 counting only the distinct ones).

The product of its digits is 12288, while the sum is 36.

The spelling of 421142183181 in words is "four hundred twenty-one billion, one hundred forty-two million, one hundred eighty-three thousand, one hundred eighty-one".