4247139 has 12 divisors (see below), whose sum is σ = 6132696. Its totient is φ = 2613312.

The previous prime is 4247129. The next prime is 4247147. The reversal of 4247139 is 9317424.

It is a happy number.

It is not a de Polignac number, because 4247139 - 2⁵ = 4247107 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4247129) 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, 3682 + ... + 4695.

It is an arithmetic number, because the mean of its divisors is an integer number (511058).

Almost surely, 2^4247139 is an apocalyptic number.

4247139 is a deficient number, since it is larger than the sum of its proper divisors (1885557).

4247139 is a wasteful number, since it uses less digits than its factorization.

4247139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8406 (or 8393 counting only the distinct ones).

The product of its digits is 6048, while the sum is 30.

The square root of 4247139 is about 2060.8588015679. The cubic root of 4247139 is about 161.9442347308.

It can be divided in two parts, 42471 and 39, that multiplied together give a square (1656369 = 1287²).

The spelling of 4247139 in words is "four million, two hundred forty-seven thousand, one hundred thirty-nine".