7147138 has 8 divisors (see below), whose sum is σ = 10867788. Its totient is φ = 3524544.

The previous prime is 7147121. The next prime is 7147139. The reversal of 7147138 is 8317417.

It can be written as a sum of positive squares in 2 ways, for example, as 7144929 + 2209 = 2673^2 + 47^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (7147139) 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, 24331 + ... + 24622.

Almost surely, 2^7147138 is an apocalyptic number.

7147138 is a deficient number, since it is larger than the sum of its proper divisors (3720650).

7147138 is a wasteful number, since it uses less digits than its factorization.

7147138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49028.

The product of its digits is 4704, while the sum is 31.

The square root of 7147138 is about 2673.4131742026. The cubic root of 7147138 is about 192.6241443550.

The spelling of 7147138 in words is "seven million, one hundred forty-seven thousand, one hundred thirty-eight".