42541034891 has 2 divisors, whose sum is σ = 42541034892. Its totient is φ = 42541034890.

The previous prime is 42541034843. The next prime is 42541034909. The reversal of 42541034891 is 19843014524.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42541034891 - 2²² = 42536840587 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (42541034801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21270517445 + 21270517446.

It is an arithmetic number, because the mean of its divisors is an integer number (21270517446).

Almost surely, 2^42541034891 is an apocalyptic number.

42541034891 is a deficient number, since it is larger than the sum of its proper divisors (1).

42541034891 is an equidigital number, since it uses as much as digits as its factorization.

42541034891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 138240, while the sum is 41.

The spelling of 42541034891 in words is "forty-two billion, five hundred forty-one million, thirty-four thousand, eight hundred ninety-one".