1142579 has 4 divisors (see below), whose sum is σ = 1153776. Its totient is φ = 1131384.

The previous prime is 1142573. The next prime is 1142593. The reversal of 1142579 is 9752411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9752411 = 2221 ⋅4391.

It is a cyclic number.

It is not a de Polignac number, because 1142579 - 2¹² = 1138483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1142573) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5444 + ... + 5649.

It is an arithmetic number, because the mean of its divisors is an integer number (288444).

2^1142579 is an apocalyptic number.

1142579 is a deficient number, since it is larger than the sum of its proper divisors (11197).

1142579 is a wasteful number, since it uses less digits than its factorization.

1142579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11196.

The product of its digits is 2520, while the sum is 29.

The square root of 1142579 is about 1068.9148703241. The cubic root of 1142579 is about 104.5431092789.

The spelling of 1142579 in words is "one million, one hundred forty-two thousand, five hundred seventy-nine".