42486820 has 24 divisors (see below), whose sum is σ = 90228600. Its totient is φ = 16803072.

The previous prime is 42486817. The next prime is 42486877. The reversal of 42486820 is 2868424.

It can be written as a sum of positive squares in 4 ways, for example, as 3873024 + 38613796 = 1968^2 + 6214^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10155 + ... + 13714.

It is an arithmetic number, because the mean of its divisors is an integer number (3759525).

Almost surely, 2^42486820 is an apocalyptic number.

It is an amenable number.

42486820 is an abundant number, since it is smaller than the sum of its proper divisors (47741780).

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

42486820 is a wasteful number, since it uses less digits than its factorization.

42486820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23967 (or 23965 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 34.

The square root of 42486820 is about 6518.1914669638. The cubic root of 42486820 is about 348.9405240147.

The spelling of 42486820 in words is "forty-two million, four hundred eighty-six thousand, eight hundred twenty".