42787278724 has 24 divisors (see below), whose sum is σ = 76965898968. Its totient is φ = 20800584960.

The previous prime is 42787278713. The next prime is 42787278757.

It is a happy number.

42787278724 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 4 ways, for example, as 10387278724 + 32400000000 = 101918^2 + 180000^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 397167 + ... + 493270.

It is an arithmetic number, because the mean of its divisors is an integer number (3206912457).

Almost surely, 2^42787278724 is an apocalyptic number.

It is an amenable number.

42787278724 is a deficient number, since it is larger than the sum of its proper divisors (34178620244).

42787278724 is a wasteful number, since it uses less digits than its factorization.

42787278724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 890775 (or 890773 counting only the distinct ones).

The product of its digits is 19668992, while the sum is 58.

The spelling of 42787278724 in words is "forty-two billion, seven hundred eighty-seven million, two hundred seventy-eight thousand, seven hundred twenty-four".