42240878 has 16 divisors (see below), whose sum is σ = 67074480. Its totient is φ = 19916736.

The previous prime is 42240871. The next prime is 42240893. The reversal of 42240878 is 87804224.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42240871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5975 + ... + 10962.

It is an arithmetic number, because the mean of its divisors is an integer number (4192155).

Almost surely, 2^42240878 is an apocalyptic number.

42240878 is a deficient number, since it is larger than the sum of its proper divisors (24833602).

42240878 is a wasteful number, since it uses less digits than its factorization.

42240878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17011.

The product of its (nonzero) digits is 28672, while the sum is 35.

The square root of 42240878 is about 6499.2982698134. The cubic root of 42240878 is about 348.2659206302.

The spelling of 42240878 in words is "forty-two million, two hundred forty thousand, eight hundred seventy-eight".