1042121669819 has 2 divisors, whose sum is σ = 1042121669820. Its totient is φ = 1042121669818.

The previous prime is 1042121669801. The next prime is 1042121669833. The reversal of 1042121669819 is 9189661212401.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1042121669819 - 2³⁶ = 973402193083 is a prime.

It is a super-2 number, since 2×1042121669819² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1042121669899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521060834909 + 521060834910.

It is an arithmetic number, because the mean of its divisors is an integer number (521060834910).

Almost surely, 2^{1042121669819} is an apocalyptic number.

1042121669819 is a deficient number, since it is larger than the sum of its proper divisors (1).

1042121669819 is an equidigital number, since it uses as much as digits as its factorization.

1042121669819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 373248, while the sum is 50.

The spelling of 1042121669819 in words is "one trillion, forty-two billion, one hundred twenty-one million, six hundred sixty-nine thousand, eight hundred nineteen".