42780138973 has 48 divisors (see below), whose sum is σ = 52885301760. Its totient is φ = 34262092800.

The previous prime is 42780138967. The next prime is 42780138977. The reversal of 42780138973 is 37983108724.

It is not a de Polignac number, because 42780138973 - 2¹³ = 42780130781 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42780138973.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42780138977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4201833 + ... + 4212001.

It is an arithmetic number, because the mean of its divisors is an integer number (1101777120).

Almost surely, 2^42780138973 is an apocalyptic number.

It is an amenable number.

42780138973 is a deficient number, since it is larger than the sum of its proper divisors (10105162787).

42780138973 is a wasteful number, since it uses less digits than its factorization.

42780138973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10310 (or 10297 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 52.

The spelling of 42780138973 in words is "forty-two billion, seven hundred eighty million, one hundred thirty-eight thousand, nine hundred seventy-three".