1249842959 has 2 divisors, whose sum is σ = 1249842960. Its totient is φ = 1249842958.

The previous prime is 1249842949. The next prime is 1249843003. The reversal of 1249842959 is 9592489421.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1249842959 - 2²⁸ = 981407503 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1249842959.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1249842949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 624921479 + 624921480.

It is an arithmetic number, because the mean of its divisors is an integer number (624921480).

Almost surely, 2^1249842959 is an apocalyptic number.

1249842959 is a deficient number, since it is larger than the sum of its proper divisors (1).

1249842959 is an equidigital number, since it uses as much as digits as its factorization.

1249842959 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1866240, while the sum is 53.

The square root of 1249842959 is about 35353.1180944482. The cubic root of 1249842959 is about 1077.1722318496.

The spelling of 1249842959 in words is "one billion, two hundred forty-nine million, eight hundred forty-two thousand, nine hundred fifty-nine".