2042102123291 has 2 divisors, whose sum is σ = 2042102123292. Its totient is φ = 2042102123290.

The previous prime is 2042102123263. The next prime is 2042102123339. The reversal of 2042102123291 is 1923212012402.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2042102123291 - 2²² = 2042097928987 is a prime.

It is a super-2 number, since 2×2042102123291² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2042102153291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1021051061645 + 1021051061646.

It is an arithmetic number, because the mean of its divisors is an integer number (1021051061646).

Almost surely, 2^{2042102123291} is an apocalyptic number.

2042102123291 is a deficient number, since it is larger than the sum of its proper divisors (1).

2042102123291 is an equidigital number, since it uses as much as digits as its factorization.

2042102123291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 29.

Adding to 2042102123291 its reverse (1923212012402), we get a palindrome (3965314135693).

The spelling of 2042102123291 in words is "two trillion, forty-two billion, one hundred two million, one hundred twenty-three thousand, two hundred ninety-one".