1142640299 has 8 divisors (see below), whose sum is σ = 1194940320. Its totient is φ = 1090558656.

The previous prime is 1142640241. The next prime is 1142640307. The reversal of 1142640299 is 9920462411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1142640299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1142640199) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43844 + ... + 64865.

It is an arithmetic number, because the mean of its divisors is an integer number (149367540).

Almost surely, 2^1142640299 is an apocalyptic number.

1142640299 is a deficient number, since it is larger than the sum of its proper divisors (52300021).

1142640299 is a wasteful number, since it uses less digits than its factorization.

1142640299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109189.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 1142640299 is about 33802.9628730974. The cubic root of 1142640299 is about 1045.4497881365.

The spelling of 1142640299 in words is "one billion, one hundred forty-two million, six hundred forty thousand, two hundred ninety-nine".