612139 has 6 divisors (see below), whose sum is σ = 672980. Its totient is φ = 556380.

The previous prime is 612137. The next prime is 612149. The reversal of 612139 is 931216.

It is not a de Polignac number, because 612139 - 2¹ = 612137 is a prime.

612139 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (612133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2409 + ... + 2650.

2⁶¹²¹³⁹ is an apocalyptic number.

612139 is a deficient number, since it is larger than the sum of its proper divisors (60841).

612139 is a wasteful number, since it uses less digits than its factorization.

612139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5081 (or 5070 counting only the distinct ones).

The product of its digits is 324, while the sum is 22.

The square root of 612139 is about 782.3931236917. The cubic root of 612139 is about 84.9082747554.

The spelling of 612139 in words is "six hundred twelve thousand, one hundred thirty-nine".