42115278 has 16 divisors (see below), whose sum is σ = 84296016. Its totient is φ = 14027520.

The previous prime is 42115253. The next prime is 42115303. The reversal of 42115278 is 87251124.

It is an interprime number because it is at equal distance from previous prime (42115253) and next prime (42115303).

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, 10800 + ... + 14172.

It is an arithmetic number, because the mean of its divisors is an integer number (5268501).

Almost surely, 2^42115278 is an apocalyptic number.

42115278 is an abundant number, since it is smaller than the sum of its proper divisors (42180738).

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

42115278 is a wasteful number, since it uses less digits than its factorization.

42115278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5459.

The product of its digits is 4480, while the sum is 30.

The square root of 42115278 is about 6489.6284947599. The cubic root of 42115278 is about 347.9203973034.

The spelling of 42115278 in words is "forty-two million, one hundred fifteen thousand, two hundred seventy-eight".