42822820 has 12 divisors (see below), whose sum is σ = 89927964. Its totient is φ = 17129120.

The previous prime is 42822817. The next prime is 42822839. The reversal of 42822820 is 2822824.

It can be written as a sum of positive squares in 2 ways, for example, as 4778596 + 38044224 = 2186^2 + 6168^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1070551 + ... + 1070590.

It is an arithmetic number, because the mean of its divisors is an integer number (7493997).

Almost surely, 2^42822820 is an apocalyptic number.

It is an amenable number.

42822820 is an abundant number, since it is smaller than the sum of its proper divisors (47105144).

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

42822820 is a wasteful number, since it uses less digits than its factorization.

42822820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2141150 (or 2141148 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 28.

The square root of 42822820 is about 6543.9147304958. The cubic root of 42822820 is about 349.8579559661.

The spelling of 42822820 in words is "forty-two million, eight hundred twenty-two thousand, eight hundred twenty".