125043993 has 40 divisors (see below), whose sum is σ = 200724480. Its totient is φ = 77293440.

The previous prime is 125043991. The next prime is 125044001. The reversal of 125043993 is 399340521.

It is a happy number.

It is not a de Polignac number, because 125043993 - 2¹ = 125043991 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125043991) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 97128 + ... + 98406.

It is an arithmetic number, because the mean of its divisors is an integer number (5018112).

Almost surely, 2^125043993 is an apocalyptic number.

It is an amenable number.

125043993 is a deficient number, since it is larger than the sum of its proper divisors (75680487).

125043993 is a wasteful number, since it uses less digits than its factorization.

125043993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1379 (or 1370 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The square root of 125043993 is about 11182.3071411941. The cubic root of 125043993 is about 500.0586504533.

The spelling of 125043993 in words is "one hundred twenty-five million, forty-three thousand, nine hundred ninety-three".