1249502642 has 16 divisors (see below), whose sum is σ = 1941499800. Its totient is φ = 602394240.

The previous prime is 1249502627. The next prime is 1249502663. The reversal of 1249502642 is 2462059421.

It can be written as a sum of positive squares in 4 ways, for example, as 626550961 + 622951681 = 25031^2 + 24959^2 .

It is a super-2 number, since 2×1249502642² = 3122513704729960328, 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 7 ways as a sum of consecutive naturals, for example, 29984 + ... + 58292.

Almost surely, 2^1249502642 is an apocalyptic number.

1249502642 is a deficient number, since it is larger than the sum of its proper divisors (691997158).

1249502642 is a wasteful number, since it uses less digits than its factorization.

1249502642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29101.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 1249502642 is about 35348.3046552448. The cubic root of 1249502642 is about 1077.0744560193.

The spelling of 1249502642 in words is "one billion, two hundred forty-nine million, five hundred two thousand, six hundred forty-two".