1140249801 has 4 divisors (see below), whose sum is σ = 1520333072. Its totient is φ = 760166532.

The previous prime is 1140249787. The next prime is 1140249809. The reversal of 1140249801 is 1089420411.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1140249801 - 2¹⁷ = 1140118729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1140249809) 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 3 ways as a sum of consecutive naturals, for example, 190041631 + ... + 190041636.

It is an arithmetic number, because the mean of its divisors is an integer number (380083268).

Almost surely, 2^1140249801 is an apocalyptic number.

It is an amenable number.

1140249801 is a deficient number, since it is larger than the sum of its proper divisors (380083271).

1140249801 is an equidigital number, since it uses as much as digits as its factorization.

1140249801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380083270.

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 1140249801 is about 33767.5850631934. The cubic root of 1140249801 is about 1044.7202233251.

The spelling of 1140249801 in words is "one billion, one hundred forty million, two hundred forty-nine thousand, eight hundred one".