2472139 has 4 divisors (see below), whose sum is σ = 2480400. Its totient is φ = 2463880.

The previous prime is 2472131. The next prime is 2472143. The reversal of 2472139 is 9312742.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2472139 - 2³ = 2472131 is a prime.

It is a super-2 number, since 2×2472139² = 12222942470642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2472131) 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, 3664 + ... + 4285.

It is an arithmetic number, because the mean of its divisors is an integer number (620100).

2^2472139 is an apocalyptic number.

2472139 is a deficient number, since it is larger than the sum of its proper divisors (8261).

2472139 is an equidigital number, since it uses as much as digits as its factorization.

2472139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8260.

The product of its digits is 3024, while the sum is 28.

The square root of 2472139 is about 1572.3037238396. The cubic root of 2472139 is about 135.2148203062.

The spelling of 2472139 in words is "two million, four hundred seventy-two thousand, one hundred thirty-nine".