123463139 has 2 divisors, whose sum is σ = 123463140. Its totient is φ = 123463138.

The previous prime is 123463091. The next prime is 123463181. The reversal of 123463139 is 931364321.

It is a strong prime.

It is an emirp because it is prime and its reverse (931364321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123463139 - 2¹² = 123459043 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (123462139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61731569 + 61731570.

It is an arithmetic number, because the mean of its divisors is an integer number (61731570).

Almost surely, 2^123463139 is an apocalyptic number.

123463139 is a deficient number, since it is larger than the sum of its proper divisors (1).

123463139 is an equidigital number, since it uses as much as digits as its factorization.

123463139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664, while the sum is 32.

The square root of 123463139 is about 11111.3968068826. The cubic root of 123463139 is about 497.9423961479.

The spelling of 123463139 in words is "one hundred twenty-three million, four hundred sixty-three thousand, one hundred thirty-nine".