42044020 has 12 divisors (see below), whose sum is σ = 88292484. Its totient is φ = 16817600.

The previous prime is 42043993. The next prime is 42044047. The reversal of 42044020 is 2044024.

It is an interprime number because it is at equal distance from previous prime (42043993) and next prime (42044047).

It can be written as a sum of positive squares in 2 ways, for example, as 15397776 + 26646244 = 3924^2 + 5162^2 .

It is a junction number, because it is equal to n+sod(n) for n = 42043985 and 42044003.

It is a congruent number.

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, 1051081 + ... + 1051120.

It is an arithmetic number, because the mean of its divisors is an integer number (7357707).

Almost surely, 2^42044020 is an apocalyptic number.

It is an amenable number.

42044020 is an abundant number, since it is smaller than the sum of its proper divisors (46248464).

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

42044020 is a wasteful number, since it uses less digits than its factorization.

42044020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2102210 (or 2102208 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 42044020 is about 6484.1360257169. The cubic root of 42044020 is about 347.7240623188.

Adding to 42044020 its reverse (2044024), we get a palindrome (44088044).

The spelling of 42044020 in words is "forty-two million, forty-four thousand, twenty".