124493531 has 4 divisors (see below), whose sum is σ = 125028072. Its totient is φ = 123958992.

The previous prime is 124493527. The next prime is 124493539. The reversal of 124493531 is 135394421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 135394421 = 293 ⋅462097.

It is a cyclic number.

It is not a de Polignac number, because 124493531 - 2² = 124493527 is a prime.

It is a super-2 number, since 2×124493531² = 30997278521695922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (124493539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 266921 + ... + 267386.

It is an arithmetic number, because the mean of its divisors is an integer number (31257018).

Almost surely, 2^124493531 is an apocalyptic number.

124493531 is a deficient number, since it is larger than the sum of its proper divisors (534541).

124493531 is an equidigital number, since it uses as much as digits as its factorization.

124493531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534540.

The product of its digits is 12960, while the sum is 32.

The square root of 124493531 is about 11157.6669156235. Note that the first 3 decimals coincide. The cubic root of 124493531 is about 499.3237939029.

The spelling of 124493531 in words is "one hundred twenty-four million, four hundred ninety-three thousand, five hundred thirty-one".