42041464109 has 2 divisors, whose sum is σ = 42041464110. Its totient is φ = 42041464108.

The previous prime is 42041464067. The next prime is 42041464211. The reversal of 42041464109 is 90146414024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40789861225 + 1251602884 = 201965^2 + 35378^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42041464109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42041464709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21020732054 + 21020732055.

It is an arithmetic number, because the mean of its divisors is an integer number (21020732055).

Almost surely, 2^42041464109 is an apocalyptic number.

It is an amenable number.

42041464109 is a deficient number, since it is larger than the sum of its proper divisors (1).

42041464109 is an equidigital number, since it uses as much as digits as its factorization.

42041464109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27648, while the sum is 35.

The spelling of 42041464109 in words is "forty-two billion, forty-one million, four hundred sixty-four thousand, one hundred nine".