1042311251 has 2 divisors, whose sum is σ = 1042311252. Its totient is φ = 1042311250.

The previous prime is 1042311241. The next prime is 1042311323. The reversal of 1042311251 is 1521132401.

It is a weak prime.

It is an emirp because it is prime and its reverse (1521132401) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1042311251 - 2⁶ = 1042311187 is a prime.

It is a super-2 number, since 2×1042311251² = 2172825487922370002, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1042311241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521155625 + 521155626.

It is an arithmetic number, because the mean of its divisors is an integer number (521155626).

Almost surely, 2^1042311251 is an apocalyptic number.

1042311251 is a deficient number, since it is larger than the sum of its proper divisors (1).

1042311251 is an equidigital number, since it uses as much as digits as its factorization.

1042311251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 1042311251 is about 32284.8455316113. The cubic root of 1042311251 is about 1013.9093823944.

Adding to 1042311251 its reverse (1521132401), we get a palindrome (2563443652).

The spelling of 1042311251 in words is "one billion, forty-two million, three hundred eleven thousand, two hundred fifty-one".