1242136151 has 2 divisors, whose sum is σ = 1242136152. Its totient is φ = 1242136150.

The previous prime is 1242136097. The next prime is 1242136169. The reversal of 1242136151 is 1516312421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1242136151 - 2³⁰ = 168394327 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1242136151.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1242136171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621068075 + 621068076.

It is an arithmetic number, because the mean of its divisors is an integer number (621068076).

Almost surely, 2^1242136151 is an apocalyptic number.

1242136151 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242136151 is an equidigital number, since it uses as much as digits as its factorization.

1242136151 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 26.

The square root of 1242136151 is about 35243.9519776089. The cubic root of 1242136151 is about 1074.9536380943.

Adding to 1242136151 its reverse (1516312421), we get a palindrome (2758448572).

The spelling of 1242136151 in words is "one billion, two hundred forty-two million, one hundred thirty-six thousand, one hundred fifty-one".