42043263402929 has 2 divisors, whose sum is σ = 42043263402930. Its totient is φ = 42043263402928.

The previous prime is 42043263402869. The next prime is 42043263402949. The reversal of 42043263402929 is 92920436234024.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41708540986225 + 334722416704 = 6458215^2 + 578552^2 .

It is a cyclic number.

It is not a de Polignac number, because 42043263402929 - 2¹² = 42043263398833 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (42043263402949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21021631701464 + 21021631701465.

It is an arithmetic number, because the mean of its divisors is an integer number (21021631701465).

Almost surely, 2^{42043263402929} is an apocalyptic number.

It is an amenable number.

42043263402929 is a deficient number, since it is larger than the sum of its proper divisors (1).

42043263402929 is an equidigital number, since it uses as much as digits as its factorization.

42043263402929 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4478976, while the sum is 50.

The spelling of 42043263402929 in words is "forty-two trillion, forty-three billion, two hundred sixty-three million, four hundred two thousand, nine hundred twenty-nine".