126422181 has 32 divisors (see below), whose sum is σ = 198076800. Its totient is φ = 79470720.

The previous prime is 126422171. The next prime is 126422221. The reversal of 126422181 is 181224621.

126422181 is a `hidden beast` number, since 1 + 2 + 642 + 2 + 18 + 1 = 666.

It is not a de Polignac number, because 126422181 - 2⁶ = 126422117 is a prime.

It is a super-2 number, since 2×126422181² = 31965135697593522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126422111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 143715 + ... + 144591.

It is an arithmetic number, because the mean of its divisors is an integer number (6189900).

Almost surely, 2^126422181 is an apocalyptic number.

It is an amenable number.

126422181 is a deficient number, since it is larger than the sum of its proper divisors (71654619).

126422181 is a wasteful number, since it uses less digits than its factorization.

126422181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1186 (or 1180 counting only the distinct ones).

The product of its digits is 1536, while the sum is 27.

The square root of 126422181 is about 11243.7618704773. The cubic root of 126422181 is about 501.8890949848.

The spelling of 126422181 in words is "one hundred twenty-six million, four hundred twenty-two thousand, one hundred eighty-one".