42788858 has 12 divisors (see below), whose sum is σ = 74662362. Its totient is φ = 18338040.

The previous prime is 42788857. The next prime is 42788873. The reversal of 42788858 is 85888724.

It can be written as a sum of positive squares in only one way, i.e., 42289009 + 499849 = 6503^2 + 707^2 .

It is not an unprimeable number, because it can be changed into a prime (42788857) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 218213 + ... + 218408.

Almost surely, 2^42788858 is an apocalyptic number.

42788858 is a deficient number, since it is larger than the sum of its proper divisors (31873504).

42788858 is a wasteful number, since it uses less digits than its factorization.

42788858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436637 (or 436630 counting only the distinct ones).

The product of its digits is 1146880, while the sum is 50.

The square root of 42788858 is about 6541.3192858933. The cubic root of 42788858 is about 349.7654428435.

The spelling of 42788858 in words is "forty-two million, seven hundred eighty-eight thousand, eight hundred fifty-eight".