42111078 has 8 divisors (see below), whose sum is σ = 84222168. Its totient is φ = 14037024.

The previous prime is 42111077. The next prime is 42111079. The reversal of 42111078 is 87011124.

It is an interprime number because it is at equal distance from previous prime (42111077) and next prime (42111079).

It is a sphenic number, since it is the product of 3 distinct primes.

42111078 is an admirable number.

It is a super-3 number, since 3×42111078³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42111071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3509251 + ... + 3509262.

It is an arithmetic number, because the mean of its divisors is an integer number (10527771).

Almost surely, 2^42111078 is an apocalyptic number.

42111078 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

42111078 is a wasteful number, since it uses less digits than its factorization.

42111078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7018518.

The product of its (nonzero) digits is 448, while the sum is 24.

The square root of 42111078 is about 6489.3048934381. The cubic root of 42111078 is about 347.9088313166.

The spelling of 42111078 in words is "forty-two million, one hundred eleven thousand, seventy-eight".