42798788 has 12 divisors (see below), whose sum is σ = 76922412. Its totient is φ = 20820960.

The previous prime is 42798787. The next prime is 42798799. The reversal of 42798788 is 88789724.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 38167684 + 4631104 = 6178^2 + 2152^2 .

It is not an unprimeable number, because it can be changed into a prime (42798781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144443 + ... + 144738.

It is an arithmetic number, because the mean of its divisors is an integer number (6410201).

Almost surely, 2^42798788 is an apocalyptic number.

It is an amenable number.

42798788 is a deficient number, since it is larger than the sum of its proper divisors (34123624).

42798788 is a wasteful number, since it uses less digits than its factorization.

42798788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289222 (or 289220 counting only the distinct ones).

The product of its digits is 1806336, while the sum is 53.

The square root of 42798788 is about 6542.0782630598. The cubic root of 42798788 is about 349.7924974115.

The spelling of 42798788 in words is "forty-two million, seven hundred ninety-eight thousand, seven hundred eighty-eight".