1042880871091 has 2 divisors, whose sum is σ = 1042880871092. Its totient is φ = 1042880871090.

The previous prime is 1042880871089. The next prime is 1042880871101. The reversal of 1042880871091 is 1901780882401.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1042880871091 - 2¹ = 1042880871089 is a prime.

It is a super-2 number, since 2×1042880871091² (a number of 25 digits) contains 22 as substring.

Together with 1042880871089, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1042880871001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521440435545 + 521440435546.

It is an arithmetic number, because the mean of its divisors is an integer number (521440435546).

Almost surely, 2^{1042880871091} is an apocalyptic number.

1042880871091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1042880871091 is an equidigital number, since it uses as much as digits as its factorization.

1042880871091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 258048, while the sum is 49.

The spelling of 1042880871091 in words is "one trillion, forty-two billion, eight hundred eighty million, eight hundred seventy-one thousand, ninety-one".