1042140221123 has 2 divisors, whose sum is σ = 1042140221124. Its totient is φ = 1042140221122.

The previous prime is 1042140221119. The next prime is 1042140221147. The reversal of 1042140221123 is 3211220412401.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1042140221123 - 2² = 1042140221119 is a prime.

It is a super-2 number, since 2×1042140221123² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1042140221113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521070110561 + 521070110562.

It is an arithmetic number, because the mean of its divisors is an integer number (521070110562).

Almost surely, 2^{1042140221123} is an apocalyptic number.

1042140221123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1042140221123 is an equidigital number, since it uses as much as digits as its factorization.

1042140221123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 1042140221123 its reverse (3211220412401), we get a palindrome (4253360633524).

The spelling of 1042140221123 in words is "one trillion, forty-two billion, one hundred forty million, two hundred twenty-one thousand, one hundred twenty-three".