7142859 has 12 divisors (see below), whose sum is σ = 10557976. Its totient is φ = 4650912.

The previous prime is 7142851. The next prime is 7142869. The reversal of 7142859 is 9582417.

It is not a de Polignac number, because 7142859 - 2³ = 7142851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7142851) 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, 8842 + ... + 9615.

Almost surely, 2^7142859 is an apocalyptic number.

7142859 is a deficient number, since it is larger than the sum of its proper divisors (3415117).

7142859 is a wasteful number, since it uses less digits than its factorization.

7142859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18506 (or 18503 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 7142859 is about 2672.6127665638. The cubic root of 7142859 is about 192.5856952462.

It can be divided in two parts, 7142 and 859, that added together give a triangular number (8001 = T₁₂₆).

The spelling of 7142859 in words is "seven million, one hundred forty-two thousand, eight hundred fifty-nine".