42278832 has 30 divisors (see below), whose sum is σ = 118322412. Its totient is φ = 14092896.

The previous prime is 42278801. The next prime is 42278833. The reversal of 42278832 is 23887224.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (42278833) 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, 146658 + ... + 146945.

Almost surely, 2^42278832 is an apocalyptic number.

It is an amenable number.

42278832 is an abundant number, since it is smaller than the sum of its proper divisors (76043580).

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

42278832 is a wasteful number, since it uses less digits than its factorization.

42278832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293617 (or 293608 counting only the distinct ones).

The product of its digits is 43008, while the sum is 36.

The square root of 42278832 is about 6502.2174679105. The cubic root of 42278832 is about 348.3701966181.

The spelling of 42278832 in words is "forty-two million, two hundred seventy-eight thousand, eight hundred thirty-two".