42774259281 has 16 divisors (see below), whose sum is σ = 62726248704. Its totient is φ = 25762564224.

The previous prime is 42774259259. The next prime is 42774259289. The reversal of 42774259281 is 18295247724.

It is a happy number.

It is not a de Polignac number, because 42774259281 - 2⁷ = 42774259153 is a prime.

It is a super-2 number, since 2×42774259281² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42774259289) 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 15 ways as a sum of consecutive naturals, for example, 11665996 + ... + 11669661.

It is an arithmetic number, because the mean of its divisors is an integer number (3920390544).

Almost surely, 2^42774259281 is an apocalyptic number.

It is an amenable number.

42774259281 is a deficient number, since it is larger than the sum of its proper divisors (19951989423).

42774259281 is a wasteful number, since it uses less digits than its factorization.

42774259281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23335720.

The product of its digits is 2257920, while the sum is 51.

The spelling of 42774259281 in words is "forty-two billion, seven hundred seventy-four million, two hundred fifty-nine thousand, two hundred eighty-one".