12145739 has 2 divisors, whose sum is σ = 12145740. Its totient is φ = 12145738.

The previous prime is 12145733. The next prime is 12145753. The reversal of 12145739 is 93754121.

12145739 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (93754121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12145739 - 2⁴ = 12145723 is a prime.

It is a super-2 number, since 2×12145739² = 295037951712242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12145733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6072869 + 6072870.

It is an arithmetic number, because the mean of its divisors is an integer number (6072870).

Almost surely, 2^12145739 is an apocalyptic number.

12145739 is a deficient number, since it is larger than the sum of its proper divisors (1).

12145739 is an equidigital number, since it uses as much as digits as its factorization.

12145739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560, while the sum is 32.

The square root of 12145739 is about 3485.0737438396. The cubic root of 12145739 is about 229.8659521356.

The spelling of 12145739 in words is "twelve million, one hundred forty-five thousand, seven hundred thirty-nine".