1240249598 has 16 divisors (see below), whose sum is σ = 2153057280. Its totient is φ = 524806776.

The previous prime is 1240249579. The next prime is 1240249639. The reversal of 1240249598 is 8959420421.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 559586 + ... + 561797.

It is an arithmetic number, because the mean of its divisors is an integer number (134566080).

Almost surely, 2^1240249598 is an apocalyptic number.

1240249598 is a deficient number, since it is larger than the sum of its proper divisors (912807682).

1240249598 is a wasteful number, since it uses less digits than its factorization.

1240249598 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1121471.

The product of its (nonzero) digits is 207360, while the sum is 44.

The square root of 1240249598 is about 35217.1775984391. The cubic root of 1240249598 is about 1074.4091501272.

The spelling of 1240249598 in words is "one billion, two hundred forty million, two hundred forty-nine thousand, five hundred ninety-eight".