42886778 has 16 divisors (see below), whose sum is σ = 70295904. Its totient is φ = 19461360.

The previous prime is 42886763. The next prime is 42886783. The reversal of 42886778 is 87768824.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16076 + ... + 18552.

It is an arithmetic number, because the mean of its divisors is an integer number (4393494).

Almost surely, 2^42886778 is an apocalyptic number.

42886778 is a deficient number, since it is larger than the sum of its proper divisors (27409126).

42886778 is a wasteful number, since it uses less digits than its factorization.

42886778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3277.

The product of its digits is 1204224, while the sum is 50.

The square root of 42886778 is about 6548.7997373565. The cubic root of 42886778 is about 350.0320460454.

The spelling of 42886778 in words is "forty-two million, eight hundred eighty-six thousand, seven hundred seventy-eight".