12139741 has 2 divisors, whose sum is σ = 12139742. Its totient is φ = 12139740.

The previous prime is 12139739. The next prime is 12139753. The reversal of 12139741 is 14793121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8732025 + 3407716 = 2955^2 + 1846^2 .

It is a cyclic number.

It is not a de Polignac number, because 12139741 - 2¹ = 12139739 is a prime.

Together with 12139739, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12139541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6069870 + 6069871.

It is an arithmetic number, because the mean of its divisors is an integer number (6069871).

Almost surely, 2^12139741 is an apocalyptic number.

It is an amenable number.

12139741 is a deficient number, since it is larger than the sum of its proper divisors (1).

12139741 is an equidigital number, since it uses as much as digits as its factorization.

12139741 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1512, while the sum is 28.

The square root of 12139741 is about 3484.2131105890. The cubic root of 12139741 is about 229.8281072310.

It can be divided in two parts, 12139 and 741, that added together give a triangular number (12880 = T₁₆₀).

The spelling of 12139741 in words is "twelve million, one hundred thirty-nine thousand, seven hundred forty-one".