1242043051 has 2 divisors, whose sum is σ = 1242043052. Its totient is φ = 1242043050.

The previous prime is 1242043031. The next prime is 1242043057. The reversal of 1242043051 is 1503402421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1242043051 - 2¹⁵ = 1242010283 is a prime.

It is not a weakly prime, because it can be changed into another prime (1242043057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621021525 + 621021526.

It is an arithmetic number, because the mean of its divisors is an integer number (621021526).

Almost surely, 2^1242043051 is an apocalyptic number.

1242043051 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242043051 is an equidigital number, since it uses as much as digits as its factorization.

1242043051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 1242043051 is about 35242.6311588678. The cubic root of 1242043051 is about 1074.9267809515.

Adding to 1242043051 its reverse (1503402421), we get a palindrome (2745445472).

The spelling of 1242043051 in words is "one billion, two hundred forty-two million, forty-three thousand, fifty-one".