1042512281 has 2 divisors, whose sum is σ = 1042512282. Its totient is φ = 1042512280.

The previous prime is 1042512277. The next prime is 1042512307. The reversal of 1042512281 is 1822152401.

It is an a-pointer prime, because the next prime (1042512307) can be obtained adding 1042512281 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 832841881 + 209670400 = 28859^2 + 14480^2 .

It is a cyclic number.

It is not a de Polignac number, because 1042512281 - 2² = 1042512277 is a prime.

It is a super-2 number, since 2×1042512281² = 2173663712071645922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1042512281.

It is not a weakly prime, because it can be changed into another prime (1042512221) 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, 521256140 + 521256141.

It is an arithmetic number, because the mean of its divisors is an integer number (521256141).

Almost surely, 2^1042512281 is an apocalyptic number.

It is an amenable number.

1042512281 is a deficient number, since it is larger than the sum of its proper divisors (1).

1042512281 is an equidigital number, since it uses as much as digits as its factorization.

1042512281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1280, while the sum is 26.

The square root of 1042512281 is about 32287.9587617427. The cubic root of 1042512281 is about 1013.9745622532.

Adding to 1042512281 its reverse (1822152401), we get a palindrome (2864664682).

The spelling of 1042512281 in words is "one billion, forty-two million, five hundred twelve thousand, two hundred eighty-one".