125493839 has 4 divisors (see below), whose sum is σ = 125785440. Its totient is φ = 125202240.

The previous prime is 125493821. The next prime is 125493883. The reversal of 125493839 is 938394521.

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

It is a cyclic number.

It is not a de Polignac number, because 125493839 - 2²⁴ = 108716623 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 125493839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125493889) 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, 145154 + ... + 146015.

It is an arithmetic number, because the mean of its divisors is an integer number (31446360).

Almost surely, 2^125493839 is an apocalyptic number.

125493839 is a deficient number, since it is larger than the sum of its proper divisors (291601).

125493839 is an equidigital number, since it uses as much as digits as its factorization.

125493839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291600.

The product of its digits is 233280, while the sum is 44.

The square root of 125493839 is about 11202.4032689419. The cubic root of 125493839 is about 500.6575867801.

The spelling of 125493839 in words is "one hundred twenty-five million, four hundred ninety-three thousand, eight hundred thirty-nine".