124140531 has 4 divisors (see below), whose sum is σ = 165520712. Its totient is φ = 82760352.

The previous prime is 124140529. The next prime is 124140553. The reversal of 124140531 is 135041421.

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

It is not a de Polignac number, because 124140531 - 2¹ = 124140529 is a prime.

It is a super-2 number, since 2×124140531² = 30821742873923922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 124140498 and 124140507.

It is not an unprimeable number, because it can be changed into a prime (124140571) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20690086 + ... + 20690091.

It is an arithmetic number, because the mean of its divisors is an integer number (41380178).

Almost surely, 2^124140531 is an apocalyptic number.

124140531 is a deficient number, since it is larger than the sum of its proper divisors (41380181).

124140531 is an equidigital number, since it uses as much as digits as its factorization.

124140531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41380180.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 124140531 is about 11141.8369670356. The cubic root of 124140531 is about 498.8514048119.

Adding to 124140531 its reverse (135041421), we get a palindrome (259181952).

The spelling of 124140531 in words is "one hundred twenty-four million, one hundred forty thousand, five hundred thirty-one".