42261362291 has 4 divisors (see below), whose sum is σ = 42320970000. Its totient is φ = 42201754584.

The previous prime is 42261362201. The next prime is 42261362317. The reversal of 42261362291 is 19226316224.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42261362291 - 2²⁶ = 42194253427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42261362201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29802791 + ... + 29804208.

It is an arithmetic number, because the mean of its divisors is an integer number (10580242500).

Almost surely, 2^42261362291 is an apocalyptic number.

42261362291 is a deficient number, since it is larger than the sum of its proper divisors (59607709).

42261362291 is an equidigital number, since it uses as much as digits as its factorization.

42261362291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59607708.

The product of its digits is 62208, while the sum is 38.

The spelling of 42261362291 in words is "forty-two billion, two hundred sixty-one million, three hundred sixty-two thousand, two hundred ninety-one".