42781435074 has 96 divisors (see below), whose sum is σ = 108870802560. Its totient is φ = 11884962816.

The previous prime is 42781435049. The next prime is 42781435093. The reversal of 42781435074 is 47053418724.

42781435074 is a `hidden beast` number, since 4 + 27 + 81 + 43 + 507 + 4 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12086797 + ... + 12090335.

It is an arithmetic number, because the mean of its divisors is an integer number (1134070860).

Almost surely, 2^42781435074 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42781435074, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54435401280).

42781435074 is an abundant number, since it is smaller than the sum of its proper divisors (66089367486).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42781435074 is a wasteful number, since it uses less digits than its factorization.

42781435074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6184 (or 6181 counting only the distinct ones).

The product of its (nonzero) digits is 752640, while the sum is 45.

The spelling of 42781435074 in words is "forty-two billion, seven hundred eighty-one million, four hundred thirty-five thousand, seventy-four".