1142279 has 2 divisors, whose sum is σ = 1142280. Its totient is φ = 1142278.

The previous prime is 1142269. The next prime is 1142287. The reversal of 1142279 is 9722411.

It is a strong prime.

It is an emirp because it is prime and its reverse (9722411) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1142279 - 2⁴ = 1142263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1142269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571139 + 571140.

It is an arithmetic number, because the mean of its divisors is an integer number (571140).

2^1142279 is an apocalyptic number.

1142279 is a deficient number, since it is larger than the sum of its proper divisors (1).

1142279 is an equidigital number, since it uses as much as digits as its factorization.

1142279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1008, while the sum is 26.

The square root of 1142279 is about 1068.7745318822. The cubic root of 1142279 is about 104.5339587291.

The spelling of 1142279 in words is "one million, one hundred forty-two thousand, two hundred seventy-nine".