42259731697 has 4 divisors (see below), whose sum is σ = 44097111360. Its totient is φ = 40422352036.

The previous prime is 42259731691. The next prime is 42259731721. The reversal of 42259731697 is 79613795224.

42259731697 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42259731697 - 2¹¹ = 42259729649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42259731691) 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, 918689797 + ... + 918689842.

It is an arithmetic number, because the mean of its divisors is an integer number (11024277840).

Almost surely, 2^42259731697 is an apocalyptic number.

It is an amenable number.

42259731697 is a deficient number, since it is larger than the sum of its proper divisors (1837379663).

42259731697 is a wasteful number, since it uses less digits than its factorization.

42259731697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1837379662.

The product of its digits is 5715360, while the sum is 55.

The spelling of 42259731697 in words is "forty-two billion, two hundred fifty-nine million, seven hundred thirty-one thousand, six hundred ninety-seven".