42205437878 has 16 divisors (see below), whose sum is σ = 65475838080. Its totient is φ = 20382772800.

The previous prime is 42205437839. The next prime is 42205437881. The reversal of 42205437878 is 87873450224.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 620993 + ... + 685596.

It is an arithmetic number, because the mean of its divisors is an integer number (4092239880).

Almost surely, 2^42205437878 is an apocalyptic number.

42205437878 is a deficient number, since it is larger than the sum of its proper divisors (23270400202).

42205437878 is a wasteful number, since it uses less digits than its factorization.

42205437878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1307143.

The product of its (nonzero) digits is 3010560, while the sum is 50.

The spelling of 42205437878 in words is "forty-two billion, two hundred five million, four hundred thirty-seven thousand, eight hundred seventy-eight".