1242324191 has 2 divisors, whose sum is σ = 1242324192. Its totient is φ = 1242324190.

The previous prime is 1242324179. The next prime is 1242324229. The reversal of 1242324191 is 1914232421.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1242324191 - 2²² = 1238129887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1242324131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621162095 + 621162096.

It is an arithmetic number, because the mean of its divisors is an integer number (621162096).

Almost surely, 2^1242324191 is an apocalyptic number.

1242324191 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242324191 is an equidigital number, since it uses as much as digits as its factorization.

1242324191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 29.

The square root of 1242324191 is about 35246.6195684068. The cubic root of 1242324191 is about 1075.0078790841.

The spelling of 1242324191 in words is "one billion, two hundred forty-two million, three hundred twenty-four thousand, one hundred ninety-one".