1249559802 has 12 divisors (see below), whose sum is σ = 2707379610. Its totient is φ = 416519928.

The previous prime is 1249559777. The next prime is 1249559837. The reversal of 1249559802 is 2089559421.

It is a happy number.

1249559802 is a `hidden beast` number, since 12 + 4 + 9 + 559 + 80 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1195845561 + 53714241 = 34581^2 + 7329^2 .

It is a super-2 number, since 2×1249559802² = 3122799397548558408, which contains 22 as substring.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 34709977 + ... + 34710012.

Almost surely, 2^1249559802 is an apocalyptic number.

1249559802 is an abundant number, since it is smaller than the sum of its proper divisors (1457819808).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1249559802 is a wasteful number, since it uses less digits than its factorization.

1249559802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69419997 (or 69419994 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The square root of 1249559802 is about 35349.1131713371. The cubic root of 1249559802 is about 1077.0908797906.

The spelling of 1249559802 in words is "one billion, two hundred forty-nine million, five hundred fifty-nine thousand, eight hundred two".