1423321139 has 2 divisors, whose sum is σ = 1423321140. Its totient is φ = 1423321138.

The previous prime is 1423321091. The next prime is 1423321147. The reversal of 1423321139 is 9311233241.

It is a strong prime.

It is an emirp because it is prime and its reverse (9311233241) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1423321139 is a prime.

It is not a weakly prime, because it can be changed into another prime (1423329139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 711660569 + 711660570.

It is an arithmetic number, because the mean of its divisors is an integer number (711660570).

Almost surely, 2^1423321139 is an apocalyptic number.

1423321139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1423321139 is an equidigital number, since it uses as much as digits as its factorization.

1423321139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 29.

The square root of 1423321139 is about 37726.9285656810. The cubic root of 1423321139 is about 1124.8664569715.

The spelling of 1423321139 in words is "one billion, four hundred twenty-three million, three hundred twenty-one thousand, one hundred thirty-nine".