124887981 has 8 divisors (see below), whose sum is σ = 169659360. Its totient is φ = 81687632.

The previous prime is 124887979. The next prime is 124887989. The reversal of 124887981 is 189788421.

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

It is a cyclic number.

It is not a de Polignac number, because 124887981 - 2¹ = 124887979 is a prime.

It is a super-2 number, since 2×124887981² = 31194015596512722, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 124887981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124887989) 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, 392571 + ... + 392888.

It is an arithmetic number, because the mean of its divisors is an integer number (21207420).

Almost surely, 2^124887981 is an apocalyptic number.

It is an amenable number.

124887981 is a deficient number, since it is larger than the sum of its proper divisors (44771379).

124887981 is an equidigital number, since it uses as much as digits as its factorization.

124887981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 785515.

The product of its digits is 258048, while the sum is 48.

The square root of 124887981 is about 11175.3291226702. The cubic root of 124887981 is about 499.8505966951.

The spelling of 124887981 in words is "one hundred twenty-four million, eight hundred eighty-seven thousand, nine hundred eighty-one".