1249875087 has 4 divisors (see below), whose sum is σ = 1666500120. Its totient is φ = 833250056.

The previous prime is 1249875079. The next prime is 1249875091. The reversal of 1249875087 is 7805789421.

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 1249875087 - 2³ = 1249875079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1249875007) 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, 208312512 + ... + 208312517.

It is an arithmetic number, because the mean of its divisors is an integer number (416625030).

Almost surely, 2^1249875087 is an apocalyptic number.

1249875087 is a deficient number, since it is larger than the sum of its proper divisors (416625033).

1249875087 is an equidigital number, since it uses as much as digits as its factorization.

1249875087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416625032.

The product of its (nonzero) digits is 1128960, while the sum is 51.

The square root of 1249875087 is about 35353.5724786053. The cubic root of 1249875087 is about 1077.1814615672.

The spelling of 1249875087 in words is "one billion, two hundred forty-nine million, eight hundred seventy-five thousand, eighty-seven".