1042511251 has 2 divisors, whose sum is σ = 1042511252. Its totient is φ = 1042511250.

The previous prime is 1042511159. The next prime is 1042511257. The reversal of 1042511251 is 1521152401.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1042511251 - 2⁹ = 1042510739 is a prime.

It is not a weakly prime, because it can be changed into another prime (1042511257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521255625 + 521255626.

It is an arithmetic number, because the mean of its divisors is an integer number (521255626).

Almost surely, 2^1042511251 is an apocalyptic number.

1042511251 is a deficient number, since it is larger than the sum of its proper divisors (1).

1042511251 is an equidigital number, since it uses as much as digits as its factorization.

1042511251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 400, while the sum is 22.

The square root of 1042511251 is about 32287.9428115202. The cubic root of 1042511251 is about 1013.9742283182.

Adding to 1042511251 its reverse (1521152401), we get a palindrome (2563663652).

The spelling of 1042511251 in words is "one billion, forty-two million, five hundred eleven thousand, two hundred fifty-one".