42066046240921 has 2 divisors, whose sum is σ = 42066046240922. Its totient is φ = 42066046240920.

The previous prime is 42066046240861. The next prime is 42066046240943. The reversal of 42066046240921 is 12904264066024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33709113462025 + 8356932778896 = 5805955^2 + 2890836^2 .

It is a cyclic number.

It is not a de Polignac number, because 42066046240921 - 2⁹ = 42066046240409 is a prime.

It is not a weakly prime, because it can be changed into another prime (42066046240321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21033023120460 + 21033023120461.

It is an arithmetic number, because the mean of its divisors is an integer number (21033023120461).

Almost surely, 2^{42066046240921} is an apocalyptic number.

It is an amenable number.

42066046240921 is a deficient number, since it is larger than the sum of its proper divisors (1).

42066046240921 is an equidigital number, since it uses as much as digits as its factorization.

42066046240921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 995328, while the sum is 46.

The spelling of 42066046240921 in words is "forty-two trillion, sixty-six billion, forty-six million, two hundred forty thousand, nine hundred twenty-one".