1321124239 has 2 divisors, whose sum is σ = 1321124240. Its totient is φ = 1321124238.

The previous prime is 1321124227. The next prime is 1321124243. The reversal of 1321124239 is 9324211231.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1321124239 - 2²⁵ = 1287569807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1321124219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660562119 + 660562120.

It is an arithmetic number, because the mean of its divisors is an integer number (660562120).

Almost surely, 2^1321124239 is an apocalyptic number.

1321124239 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321124239 is an equidigital number, since it uses as much as digits as its factorization.

1321124239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 28.

The square root of 1321124239 is about 36347.2727862766. The cubic root of 1321124239 is about 1097.2726480459.

The spelling of 1321124239 in words is "one billion, three hundred twenty-one million, one hundred twenty-four thousand, two hundred thirty-nine".