42350113261 has 4 divisors (see below), whose sum is σ = 44841296412. Its totient is φ = 39858930112.

The previous prime is 42350113259. The next prime is 42350113271. The reversal of 42350113261 is 16231105324.

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

It can be written as a sum of positive squares in 2 ways, for example, as 31057012900 + 11293100361 = 176230^2 + 106269^2 .

It is a cyclic number.

It is not a de Polignac number, because 42350113261 - 2¹ = 42350113259 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42350113271) 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, 1245591550 + ... + 1245591583.

It is an arithmetic number, because the mean of its divisors is an integer number (11210324103).

Almost surely, 2^42350113261 is an apocalyptic number.

It is an amenable number.

42350113261 is a deficient number, since it is larger than the sum of its proper divisors (2491183151).

42350113261 is a wasteful number, since it uses less digits than its factorization.

42350113261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2491183150.

The product of its (nonzero) digits is 4320, while the sum is 28.

Adding to 42350113261 its reverse (16231105324), we get a palindrome (58581218585).

The spelling of 42350113261 in words is "forty-two billion, three hundred fifty million, one hundred thirteen thousand, two hundred sixty-one".