42280016 has 20 divisors (see below), whose sum is σ = 86229600. Its totient is φ = 20027232.

The previous prime is 42280013. The next prime is 42280031. The reversal of 42280016 is 61008224.

It is a junction number, because it is equal to n+sod(n) for n = 42279973 and 42280000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42280013) 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, 69236 + ... + 69843.

It is an arithmetic number, because the mean of its divisors is an integer number (4311480).

Almost surely, 2^42280016 is an apocalyptic number.

It is an amenable number.

42280016 is an abundant number, since it is smaller than the sum of its proper divisors (43949584).

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

42280016 is a wasteful number, since it uses less digits than its factorization.

42280016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139106 (or 139100 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 42280016 is about 6502.3085131359. The cubic root of 42280016 is about 348.3734485722.

The spelling of 42280016 in words is "forty-two million, two hundred eighty thousand, sixteen".