125951943 has 8 divisors (see below), whose sum is σ = 180854128. Its totient is φ = 77508864.

The previous prime is 125951939. The next prime is 125951957. The reversal of 125951943 is 349159521.

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

It is not a de Polignac number, because 125951943 - 2² = 125951939 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 3229537 = 125951943 / (1 + 2 + 5 + 9 + 5 + 1 + 9 + 4 + 3).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125951923) 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 7 ways as a sum of consecutive naturals, for example, 1614730 + ... + 1614807.

It is an arithmetic number, because the mean of its divisors is an integer number (22606766).

Almost surely, 2^125951943 is an apocalyptic number.

125951943 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

125951943 is a deficient number, since it is larger than the sum of its proper divisors (54902185).

125951943 is a wasteful number, since it uses less digits than its factorization.

125951943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3229553.

The product of its digits is 48600, while the sum is 39.

The square root of 125951943 is about 11222.8313272543. The cubic root of 125951943 is about 501.2660488681.

The spelling of 125951943 in words is "one hundred twenty-five million, nine hundred fifty-one thousand, nine hundred forty-three".