42780846 has 8 divisors (see below), whose sum is σ = 85561704. Its totient is φ = 14260280.

The previous prime is 42780811. The next prime is 42780863. The reversal of 42780846 is 64808724.

It is a sphenic number, since it is the product of 3 distinct primes.

42780846 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3565065 + ... + 3565076.

It is an arithmetic number, because the mean of its divisors is an integer number (10695213).

Almost surely, 2^42780846 is an apocalyptic number.

42780846 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

42780846 is a wasteful number, since it uses less digits than its factorization.

42780846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7130146.

The product of its (nonzero) digits is 86016, while the sum is 39.

The square root of 42780846 is about 6540.7068425362. The cubic root of 42780846 is about 349.7436108699.

The spelling of 42780846 in words is "forty-two million, seven hundred eighty thousand, eight hundred forty-six".