124742537 has 4 divisors (see below), whose sum is σ = 125031060. Its totient is φ = 124454016.

The previous prime is 124742521. The next prime is 124742539. The reversal of 124742537 is 735247421.

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

It can be written as a sum of positive squares in 2 ways, for example, as 52475536 + 72267001 = 7244^2 + 8501^2 .

It is a cyclic number.

It is not a de Polignac number, because 124742537 - 2⁴ = 124742521 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 124742497 and 124742506.

It is not an unprimeable number, because it can be changed into a prime (124742539) 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, 143612 + ... + 144477.

It is an arithmetic number, because the mean of its divisors is an integer number (31257765).

Almost surely, 2^124742537 is an apocalyptic number.

It is an amenable number.

124742537 is a deficient number, since it is larger than the sum of its proper divisors (288523).

124742537 is an equidigital number, since it uses as much as digits as its factorization.

124742537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288522.

The product of its digits is 47040, while the sum is 35.

The square root of 124742537 is about 11168.8198570843. The cubic root of 124742537 is about 499.6564800421.

Adding to 124742537 its reverse (735247421), we get a palindrome (859989958).

The spelling of 124742537 in words is "one hundred twenty-four million, seven hundred forty-two thousand, five hundred thirty-seven".