42025820 has 48 divisors (see below), whose sum is σ = 92207808. Its totient is φ = 16074240.

The previous prime is 42025793. The next prime is 42025831. The reversal of 42025820 is 2852024.

It is a congruent number.

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, 42977 + ... + 43943.

It is an arithmetic number, because the mean of its divisors is an integer number (1920996).

Almost surely, 2^42025820 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42025820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46103904).

42025820 is an abundant number, since it is smaller than the sum of its proper divisors (50181988).

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

42025820 is a wasteful number, since it uses less digits than its factorization.

42025820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1070 (or 1068 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 42025820 is about 6482.7324485899. The cubic root of 42025820 is about 347.6738808556.

Adding to 42025820 its reverse (2852024), we get a palindrome (44877844).

The spelling of 42025820 in words is "forty-two million, twenty-five thousand, eight hundred twenty".