42025128 has 16 divisors (see below), whose sum is σ = 105062880. Its totient is φ = 14008368.

The previous prime is 42025127. The next prime is 42025129. The reversal of 42025128 is 82152024.

It is an interprime number because it is at equal distance from previous prime (42025127) and next prime (42025129).

It is a super-2 number, since 2×42025128² = 3532222766832768, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 1751047 = 42025128 / (4 + 2 + 0 + 2 + 5 + 1 + 2 + 8).

It is a junction number, because it is equal to n+sod(n) for n = 42025098 and 42025107.

It is not an unprimeable number, because it can be changed into a prime (42025127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 875500 + ... + 875547.

It is an arithmetic number, because the mean of its divisors is an integer number (6566430).

Almost surely, 2^42025128 is an apocalyptic number.

It is an amenable number.

42025128 is an abundant number, since it is smaller than the sum of its proper divisors (63037752).

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

42025128 is a wasteful number, since it uses less digits than its factorization.

42025128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1751056 (or 1751052 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 42025128 is about 6482.6790758143. The cubic root of 42025128 is about 347.6719725713.

The spelling of 42025128 in words is "forty-two million, twenty-five thousand, one hundred twenty-eight".