124640503 has 4 divisors (see below), whose sum is σ = 134228248. Its totient is φ = 115052760.

The previous prime is 124640489. The next prime is 124640543. The reversal of 124640503 is 305046421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 305046421 = 61 ⋅5000761.

It is a cyclic number.

It is not a de Polignac number, because 124640503 - 2¹³ = 124632311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124640543) 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, 4793853 + ... + 4793878.

It is an arithmetic number, because the mean of its divisors is an integer number (33557062).

Almost surely, 2^124640503 is an apocalyptic number.

124640503 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

124640503 is a deficient number, since it is larger than the sum of its proper divisors (9587745).

124640503 is an equidigital number, since it uses as much as digits as its factorization.

124640503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9587744.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 124640503 is about 11164.2511168461. The cubic root of 124640503 is about 499.5202104178.

Adding to 124640503 its reverse (305046421), we get a palindrome (429686924).

The spelling of 124640503 in words is "one hundred twenty-four million, six hundred forty thousand, five hundred three".