42275820 has 48 divisors (see below), whose sum is σ = 118752480. Its totient is φ = 11237376.

The previous prime is 42275819. The next prime is 42275839. The reversal of 42275820 is 2857224.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21436 + ... + 23324.

It is an arithmetic number, because the mean of its divisors is an integer number (2474010).

Almost surely, 2^42275820 is an apocalyptic number.

It is an amenable number.

42275820 is an abundant number, since it is smaller than the sum of its proper divisors (76476660).

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

42275820 is a wasteful number, since it uses less digits than its factorization.

42275820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2274 (or 2272 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 30.

The square root of 42275820 is about 6501.9858504921. The cubic root of 42275820 is about 348.3619236369.

The spelling of 42275820 in words is "forty-two million, two hundred seventy-five thousand, eight hundred twenty".