42781484 has 6 divisors (see below), whose sum is σ = 74867604. Its totient is φ = 21390740.

The previous prime is 42781481. The next prime is 42781507. The reversal of 42781484 is 48418724.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (42781481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5347682 + ... + 5347689.

It is an arithmetic number, because the mean of its divisors is an integer number (12477934).

Almost surely, 2^42781484 is an apocalyptic number.

It is an amenable number.

42781484 is a deficient number, since it is larger than the sum of its proper divisors (32086120).

42781484 is a wasteful number, since it uses less digits than its factorization.

42781484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10695375 (or 10695373 counting only the distinct ones).

The product of its digits is 57344, while the sum is 38.

The square root of 42781484 is about 6540.7556138416. The cubic root of 42781484 is about 349.7453494620.

The spelling of 42781484 in words is "forty-two million, seven hundred eighty-one thousand, four hundred eighty-four".