42291855293 has 2 divisors, whose sum is σ = 42291855294. Its totient is φ = 42291855292.

The previous prime is 42291855289. The next prime is 42291855367. The reversal of 42291855293 is 39255819224.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38282052964 + 4009802329 = 195658^2 + 63323^2 .

It is a cyclic number.

It is not a de Polignac number, because 42291855293 - 2² = 42291855289 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42291855233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21145927646 + 21145927647.

It is an arithmetic number, because the mean of its divisors is an integer number (21145927647).

Almost surely, 2^42291855293 is an apocalyptic number.

It is an amenable number.

42291855293 is a deficient number, since it is larger than the sum of its proper divisors (1).

42291855293 is an equidigital number, since it uses as much as digits as its factorization.

42291855293 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1555200, while the sum is 50.

The spelling of 42291855293 in words is "forty-two billion, two hundred ninety-one million, eight hundred fifty-five thousand, two hundred ninety-three".