140424181 has 2 divisors, whose sum is σ = 140424182. Its totient is φ = 140424180.

The previous prime is 140424173. The next prime is 140424191. The reversal of 140424181 is 181424041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 140422500 + 1681 = 11850^2 + 41^2 .

It is a cyclic number.

It is not a de Polignac number, because 140424181 - 2³ = 140424173 is a prime.

It is a super-2 number, since 2×140424181² = 39437901219041522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140424191) 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 as a sum of consecutive naturals, namely, 70212090 + 70212091.

It is an arithmetic number, because the mean of its divisors is an integer number (70212091).

Almost surely, 2^140424181 is an apocalyptic number.

It is an amenable number.

140424181 is a deficient number, since it is larger than the sum of its proper divisors (1).

140424181 is an equidigital number, since it uses as much as digits as its factorization.

140424181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1024, while the sum is 25.

The square root of 140424181 is about 11850.0709280578. The cubic root of 140424181 is about 519.7732998504.

The spelling of 140424181 in words is "one hundred forty million, four hundred twenty-four thousand, one hundred eighty-one".