124742987 has 8 divisors (see below), whose sum is σ = 127207632. Its totient is φ = 122292000.

The previous prime is 124742963. The next prime is 124742993. The reversal of 124742987 is 789247421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-124742987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (124742927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16112 + ... + 22562.

It is an arithmetic number, because the mean of its divisors is an integer number (15900954).

Almost surely, 2^124742987 is an apocalyptic number.

124742987 is a deficient number, since it is larger than the sum of its proper divisors (2464645).

124742987 is an equidigital number, since it uses as much as digits as its factorization.

124742987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6829.

The product of its digits is 225792, while the sum is 44.

The square root of 124742987 is about 11168.8400024353. The cubic root of 124742987 is about 499.6570808667.

The spelling of 124742987 in words is "one hundred twenty-four million, seven hundred forty-two thousand, nine hundred eighty-seven".