1142127279 has 12 divisors (see below), whose sum is σ = 1654471000. Its totient is φ = 759234384.

The previous prime is 1142127241. The next prime is 1142127293. The reversal of 1142127279 is 9727212411.

1142127279 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1142127279 - 2²⁵ = 1108572847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142127979) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 178669 + ... + 184950.

Almost surely, 2^1142127279 is an apocalyptic number.

1142127279 is a deficient number, since it is larger than the sum of its proper divisors (512343721).

1142127279 is a wasteful number, since it uses less digits than its factorization.

1142127279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363974 (or 363971 counting only the distinct ones).

The product of its digits is 14112, while the sum is 36.

The square root of 1142127279 is about 33795.3736330877. The cubic root of 1142127279 is about 1045.2933035050.

The spelling of 1142127279 in words is "one billion, one hundred forty-two million, one hundred twenty-seven thousand, two hundred seventy-nine".