1252124999 has 4 divisors (see below), whose sum is σ = 1292516160. Its totient is φ = 1211733840.

The previous prime is 1252124989. The next prime is 1252125001. The reversal of 1252124999 is 9994212521.

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 1252124999 - 2⁴ = 1252124983 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 (1252124989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20195534 + ... + 20195595.

It is an arithmetic number, because the mean of its divisors is an integer number (323129040).

Almost surely, 2^1252124999 is an apocalyptic number.

1252124999 is a deficient number, since it is larger than the sum of its proper divisors (40391161).

1252124999 is an equidigital number, since it uses as much as digits as its factorization.

1252124999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40391160.

The product of its digits is 116640, while the sum is 44.

The square root of 1252124999 is about 35385.3783221262. The cubic root of 1252124999 is about 1077.8274223110.

The spelling of 1252124999 in words is "one billion, two hundred fifty-two million, one hundred twenty-four thousand, nine hundred ninety-nine".