1042121669801 has 2 divisors, whose sum is σ = 1042121669802. Its totient is φ = 1042121669800.

The previous prime is 1042121669789. The next prime is 1042121669819. The reversal of 1042121669801 is 1089661212401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 733292505625 + 308829164176 = 856325^2 + 555724^2 .

It is a cyclic number.

It is not a de Polignac number, because 1042121669801 - 2⁶ = 1042121669737 is a prime.

It is not a weakly prime, because it can be changed into another prime (1042121669851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521060834900 + 521060834901.

It is an arithmetic number, because the mean of its divisors is an integer number (521060834901).

Almost surely, 2^{1042121669801} is an apocalyptic number.

It is an amenable number.

1042121669801 is a deficient number, since it is larger than the sum of its proper divisors (1).

1042121669801 is an equidigital number, since it uses as much as digits as its factorization.

1042121669801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 41.

The spelling of 1042121669801 in words is "one trillion, forty-two billion, one hundred twenty-one million, six hundred sixty-nine thousand, eight hundred one".