124999749 has 12 divisors (see below), whose sum is σ = 206348896. Its totient is φ = 71428392.

The previous prime is 124999747. The next prime is 124999829. The reversal of 124999749 is 947999421.

It is not a de Polignac number, because 124999749 - 2¹ = 124999747 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 124999695 and 124999704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124999741) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 991999 + ... + 992124.

Almost surely, 2^124999749 is an apocalyptic number.

It is an amenable number.

124999749 is a deficient number, since it is larger than the sum of its proper divisors (81349147).

124999749 is a wasteful number, since it uses less digits than its factorization.

124999749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1984136 (or 1984133 counting only the distinct ones).

The product of its digits is 1469664, while the sum is 54.

The square root of 124999749 is about 11180.3286624321. The cubic root of 124999749 is about 499.9996653331. Note that the first 3 decimals are identical.

The spelling of 124999749 in words is "one hundred twenty-four million, nine hundred ninety-nine thousand, seven hundred forty-nine".