42280047 has 12 divisors (see below), whose sum is σ = 61512360. Its totient is φ = 27983088.

The previous prime is 42280039. The next prime is 42280079. The reversal of 42280047 is 74008224.

It is not a de Polignac number, because 42280047 - 2³ = 42280039 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42280047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42288047) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15648 + ... + 18149.

It is an arithmetic number, because the mean of its divisors is an integer number (5126030).

Almost surely, 2^42280047 is an apocalyptic number.

42280047 is a deficient number, since it is larger than the sum of its proper divisors (19232313).

42280047 is a wasteful number, since it uses less digits than its factorization.

42280047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33942 (or 33939 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 27.

The square root of 42280047 is about 6502.3108969043. The cubic root of 42280047 is about 348.3735337155.

The spelling of 42280047 in words is "forty-two million, two hundred eighty thousand, forty-seven".