1249342087 has 24 divisors (see below), whose sum is σ = 1520755200. Its totient is φ = 1005214080.

The previous prime is 1249342009. The next prime is 1249342097. The reversal of 1249342087 is 7802439421.

It is not a de Polignac number, because 1249342087 - 2¹⁹ = 1248817799 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 (1249342097) 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 23 ways as a sum of consecutive naturals, for example, 1211262 + ... + 1212292.

It is an arithmetic number, because the mean of its divisors is an integer number (63364800).

Almost surely, 2^1249342087 is an apocalyptic number.

1249342087 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1249342087 is a deficient number, since it is larger than the sum of its proper divisors (271413113).

1249342087 is a wasteful number, since it uses less digits than its factorization.

1249342087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1671 (or 1654 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 1249342087 is about 35346.0335398472. The cubic root of 1249342087 is about 1077.0283211037.

The spelling of 1249342087 in words is "one billion, two hundred forty-nine million, three hundred forty-two thousand, eighty-seven".