1242700159 has 2 divisors, whose sum is σ = 1242700160. Its totient is φ = 1242700158.

The previous prime is 1242700127. The next prime is 1242700177. The reversal of 1242700159 is 9510072421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1242700159 - 2⁵ = 1242700127 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1242700159.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1242700259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621350079 + 621350080.

It is an arithmetic number, because the mean of its divisors is an integer number (621350080).

Almost surely, 2^1242700159 is an apocalyptic number.

1242700159 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242700159 is an equidigital number, since it uses as much as digits as its factorization.

1242700159 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 1242700159 is about 35251.9525558514. The cubic root of 1242700159 is about 1075.1163123472.

The spelling of 1242700159 in words is "one billion, two hundred forty-two million, seven hundred thousand, one hundred fifty-nine".