42216078 has 16 divisors (see below), whose sum is σ = 84900816. Its totient is φ = 13993920.

The previous prime is 42216061. The next prime is 42216113. The reversal of 42216078 is 87061224.

It is a super-3 number, since 3×42216078³ (a number of 24 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

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, 18351 + ... + 20522.

It is an arithmetic number, because the mean of its divisors is an integer number (5306301).

Almost surely, 2^42216078 is an apocalyptic number.

42216078 is an abundant number, since it is smaller than the sum of its proper divisors (42684738).

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

42216078 is a wasteful number, since it uses less digits than its factorization.

42216078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39059.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 42216078 is about 6497.3900914136. The cubic root of 42216078 is about 348.1977506010.

The spelling of 42216078 in words is "forty-two million, two hundred sixteen thousand, seventy-eight".