1242010199 has 2 divisors, whose sum is σ = 1242010200. Its totient is φ = 1242010198.

The previous prime is 1242010181. The next prime is 1242010207. The reversal of 1242010199 is 9910102421.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1242010199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1242010139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621005099 + 621005100.

It is an arithmetic number, because the mean of its divisors is an integer number (621005100).

Almost surely, 2^1242010199 is an apocalyptic number.

1242010199 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242010199 is an equidigital number, since it uses as much as digits as its factorization.

1242010199 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 1242010199 is about 35242.1650725378. The cubic root of 1242010199 is about 1074.9173036079.

The spelling of 1242010199 in words is "one billion, two hundred forty-two million, ten thousand, one hundred ninety-nine".