42025720 has 96 divisors (see below), whose sum is σ = 109645200. Its totient is φ = 14446080.

The previous prime is 42025703. The next prime is 42025723. The reversal of 42025720 is 2752024.

It is a super-2 number, since 2×42025720² = 3532322283036800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 42025691 and 42025700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42025723) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 91732 + ... + 92188.

Almost surely, 2^42025720 is an apocalyptic number.

42025720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42025720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54822600).

42025720 is an abundant number, since it is smaller than the sum of its proper divisors (67619480).

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

42025720 is a wasteful number, since it uses less digits than its factorization.

42025720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509 (or 494 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 22.

The square root of 42025720 is about 6482.7247357882. The cubic root of 42025720 is about 347.6736050933.

Adding to 42025720 its reverse (2752024), we get a palindrome (44777744).

The spelling of 42025720 in words is "forty-two million, twenty-five thousand, seven hundred twenty".