42734304781 has 12 divisors (see below), whose sum is σ = 49738707072. Its totient is φ = 36609234648.

The previous prime is 42734304779. The next prime is 42734304871. The reversal of 42734304781 is 18740343724.

It is not a de Polignac number, because 42734304781 - 2¹ = 42734304779 is a prime.

It is a super-2 number, since 2×42734304781² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42734304721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 149875 + ... + 328528.

It is an arithmetic number, because the mean of its divisors is an integer number (4144892256).

Almost surely, 2^42734304781 is an apocalyptic number.

It is an amenable number.

42734304781 is a deficient number, since it is larger than the sum of its proper divisors (7004402291).

42734304781 is a wasteful number, since it uses less digits than its factorization.

42734304781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480240 (or 480233 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 43.

The spelling of 42734304781 in words is "forty-two billion, seven hundred thirty-four million, three hundred four thousand, seven hundred eighty-one".