1042542251 has 2 divisors, whose sum is σ = 1042542252. Its totient is φ = 1042542250.

The previous prime is 1042542233. The next prime is 1042542269. The reversal of 1042542251 is 1522452401.

It is a balanced prime because it is at equal distance from previous prime (1042542233) and next prime (1042542269).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1042542251 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1042542251.

It is not a weakly prime, because it can be changed into another prime (1042542211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521271125 + 521271126.

It is an arithmetic number, because the mean of its divisors is an integer number (521271126).

Almost surely, 2^1042542251 is an apocalyptic number.

1042542251 is a deficient number, since it is larger than the sum of its proper divisors (1).

1042542251 is an equidigital number, since it uses as much as digits as its factorization.

1042542251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 1042542251 is about 32288.4228633112. The cubic root of 1042542251 is about 1013.9842786940.

Adding to 1042542251 its reverse (1522452401), we get a palindrome (2564994652).

The spelling of 1042542251 in words is "one billion, forty-two million, five hundred forty-two thousand, two hundred fifty-one".