2415139 has 4 divisors (see below), whose sum is σ = 2557224. Its totient is φ = 2273056.

The previous prime is 2415137. The next prime is 2415143. The reversal of 2415139 is 9315142.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9315142 = 2 ⋅4657571.

It is a cyclic number.

It is not a de Polignac number, because 2415139 - 2¹ = 2415137 is a prime.

It is a Duffinian number.

2415139 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2415137) 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, 71017 + ... + 71050.

It is an arithmetic number, because the mean of its divisors is an integer number (639306).

2^2415139 is an apocalyptic number.

2415139 is a deficient number, since it is larger than the sum of its proper divisors (142085).

2415139 is a wasteful number, since it uses less digits than its factorization.

2415139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142084.

The product of its digits is 1080, while the sum is 25.

The square root of 2415139 is about 1554.0717486654. The cubic root of 2415139 is about 134.1675153083.

The spelling of 2415139 in words is "two million, four hundred fifteen thousand, one hundred thirty-nine".