42254435761 has 4 divisors (see below), whose sum is σ = 43711485300. Its totient is φ = 40797386224.

The previous prime is 42254435753. The next prime is 42254435777. The reversal of 42254435761 is 16753445224.

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 27937116736 + 14317319025 = 167144^2 + 119655^2 .

It is a cyclic number.

It is not a de Polignac number, because 42254435761 - 2³ = 42254435753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42254435791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 728524726 + ... + 728524783.

It is an arithmetic number, because the mean of its divisors is an integer number (10927871325).

Almost surely, 2^42254435761 is an apocalyptic number.

It is an amenable number.

42254435761 is a deficient number, since it is larger than the sum of its proper divisors (1457049539).

42254435761 is a wasteful number, since it uses less digits than its factorization.

42254435761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1457049538.

The product of its digits is 806400, while the sum is 43.

The spelling of 42254435761 in words is "forty-two billion, two hundred fifty-four million, four hundred thirty-five thousand, seven hundred sixty-one".