1142297979 has 8 divisors (see below), whose sum is σ = 1523834640. Its totient is φ = 761146656.

The previous prime is 1142297963. The next prime is 1142298043. The reversal of 1142297979 is 9797922411.

It is a happy number.

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

It is not a de Polignac number, because 1142297979 - 2⁴ = 1142297963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1142297909) 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, 89344 + ... + 101325.

It is an arithmetic number, because the mean of its divisors is an integer number (190479330).

Almost surely, 2^1142297979 is an apocalyptic number.

1142297979 is a deficient number, since it is larger than the sum of its proper divisors (381536661).

1142297979 is a wasteful number, since it uses less digits than its factorization.

1142297979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192669.

The product of its digits is 571536, while the sum is 51.

The square root of 1142297979 is about 33797.8990323363. The cubic root of 1142297979 is about 1045.3453767084.

The spelling of 1142297979 in words is "one billion, one hundred forty-two million, two hundred ninety-seven thousand, nine hundred seventy-nine".