124140431 has 4 divisors (see below), whose sum is σ = 124164264. Its totient is φ = 124116600.

The previous prime is 124140397. The next prime is 124140449. The reversal of 124140431 is 134041421.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 124140431 - 2²⁶ = 57031567 is a prime.

It is a super-2 number, since 2×124140431² = 30821693217731522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124140451) 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 in 3 ways as a sum of consecutive naturals, for example, 380 + ... + 15761.

It is an arithmetic number, because the mean of its divisors is an integer number (31041066).

Almost surely, 2^124140431 is an apocalyptic number.

124140431 is a deficient number, since it is larger than the sum of its proper divisors (23833).

124140431 is an equidigital number, since it uses as much as digits as its factorization.

124140431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23832.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 124140431 is about 11141.8324794443. The cubic root of 124140431 is about 498.8512708639.

Adding to 124140431 its reverse (134041421), we get a palindrome (258181852).

It can be divided in two parts, 124140 and 431, that multiplied together give a triangular number (53504340 = T₁₀₃₄₄).

The spelling of 124140431 in words is "one hundred twenty-four million, one hundred forty thousand, four hundred thirty-one".