123619147 has 2 divisors, whose sum is σ = 123619148. Its totient is φ = 123619146.

The previous prime is 123619091. The next prime is 123619157. The reversal of 123619147 is 741916321.

It is a strong prime.

It is an emirp because it is prime and its reverse (741916321) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123619147 is a prime.

It is not a weakly prime, because it can be changed into another prime (123619157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61809573 + 61809574.

It is an arithmetic number, because the mean of its divisors is an integer number (61809574).

Almost surely, 2^123619147 is an apocalyptic number.

123619147 is a deficient number, since it is larger than the sum of its proper divisors (1).

123619147 is an equidigital number, since it uses as much as digits as its factorization.

123619147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072, while the sum is 34.

The square root of 123619147 is about 11118.4147701010. The cubic root of 123619147 is about 498.1520411773.

The spelling of 123619147 in words is "one hundred twenty-three million, six hundred nineteen thousand, one hundred forty-seven".