125979391 has 8 divisors (see below), whose sum is σ = 126783360. Its totient is φ = 125178648.

The previous prime is 125979389. The next prime is 125979419. The reversal of 125979391 is 193979521.

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 125979391 - 2¹ = 125979389 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 (125979331) 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, 151920 + ... + 152746.

It is an arithmetic number, because the mean of its divisors is an integer number (15847920).

Almost surely, 2^125979391 is an apocalyptic number.

125979391 is a deficient number, since it is larger than the sum of its proper divisors (803969).

125979391 is an equidigital number, since it uses as much as digits as its factorization.

125979391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1613.

The product of its digits is 153090, while the sum is 46.

The square root of 125979391 is about 11224.0541249586. The cubic root of 125979391 is about 501.3024589222.

The spelling of 125979391 in words is "one hundred twenty-five million, nine hundred seventy-nine thousand, three hundred ninety-one".