42054820 has 12 divisors (see below), whose sum is σ = 88315164. Its totient is φ = 16821920.

The previous prime is 42054767. The next prime is 42054827. The reversal of 42054820 is 2845024.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7268416 + 34786404 = 2696^2 + 5898^2 .

It is not an unprimeable number, because it can be changed into a prime (42054827) 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, 1051351 + ... + 1051390.

It is an arithmetic number, because the mean of its divisors is an integer number (7359597).

Almost surely, 2^42054820 is an apocalyptic number.

It is an amenable number.

42054820 is an abundant number, since it is smaller than the sum of its proper divisors (46260344).

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

42054820 is a wasteful number, since it uses less digits than its factorization.

42054820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2102750 (or 2102748 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 42054820 is about 6484.9687740189. The cubic root of 42054820 is about 347.7538334838.

Adding to 42054820 its reverse (2845024), we get a palindrome (44899844).

It can be divided in two parts, 4205 and 4820, that added together give a square (9025 = 95²).

The spelling of 42054820 in words is "forty-two million, fifty-four thousand, eight hundred twenty".