1142651679 has 32 divisors (see below), whose sum is σ = 1661936640. Its totient is φ = 694147968.

The previous prime is 1142651663. The next prime is 1142651681. The reversal of 1142651679 is 9761562411.

It is not a de Polignac number, because 1142651679 - 2⁴ = 1142651663 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1142651679.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142651479) 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 31 ways as a sum of consecutive naturals, for example, 1099242 + ... + 1100280.

It is an arithmetic number, because the mean of its divisors is an integer number (51935520).

Almost surely, 2^1142651679 is an apocalyptic number.

1142651679 is a deficient number, since it is larger than the sum of its proper divisors (519284961).

1142651679 is a wasteful number, since it uses less digits than its factorization.

1142651679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1391.

The product of its digits is 90720, while the sum is 42.

The square root of 1142651679 is about 33803.1312011180. The cubic root of 1142651679 is about 1045.4532588055.

The spelling of 1142651679 in words is "one billion, one hundred forty-two million, six hundred fifty-one thousand, six hundred seventy-nine".