125126981 has 8 divisors (see below), whose sum is σ = 144418944. Its totient is φ = 106189200.

The previous prime is 125126941. The next prime is 125127029. The reversal of 125126981 is 189621521.

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 125126981 - 2⁶ = 125126917 is a prime.

It is a super-2 number, since 2×125126981² = 31313522748348722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125126941) 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, 87785 + ... + 89198.

It is an arithmetic number, because the mean of its divisors is an integer number (18052368).

Almost surely, 2^125126981 is an apocalyptic number.

It is an amenable number.

125126981 is a deficient number, since it is larger than the sum of its proper divisors (19291963).

125126981 is a wasteful number, since it uses less digits than its factorization.

125126981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177091.

The product of its digits is 8640, while the sum is 35.

The square root of 125126981 is about 11186.0172089980. The cubic root of 125126981 is about 500.1692507019.

The spelling of 125126981 in words is "one hundred twenty-five million, one hundred twenty-six thousand, nine hundred eighty-one".