42731200777 has 4 divisors (see below), whose sum is σ = 42746139396. Its totient is φ = 42716262160.

The previous prime is 42731200751. The next prime is 42731200789. The reversal of 42731200777 is 77700213724.

It is a happy number.

42731200777 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.

It can be written as a sum of positive squares in 2 ways, for example, as 10970258121 + 31760942656 = 104739^2 + 178216^2 .

It is a cyclic number.

It is not a de Polignac number, because 42731200777 - 2²⁷ = 42596983049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42731200717) 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, 7465018 + ... + 7470739.

It is an arithmetic number, because the mean of its divisors is an integer number (10686534849).

Almost surely, 2^42731200777 is an apocalyptic number.

It is an amenable number.

42731200777 is a deficient number, since it is larger than the sum of its proper divisors (14938619).

42731200777 is a wasteful number, since it uses less digits than its factorization.

42731200777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14938618.

The product of its (nonzero) digits is 115248, while the sum is 40.

The spelling of 42731200777 in words is "forty-two billion, seven hundred thirty-one million, two hundred thousand, seven hundred seventy-seven".