42025428 has 36 divisors (see below), whose sum is σ = 112481460. Its totient is φ = 13184256.

The previous prime is 42025409. The next prime is 42025433. The reversal of 42025428 is 82452024.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 39162564 + 2862864 = 6258^2 + 1692^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×42025428² = 3532273197166368, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33723 + ... + 34946.

It is an arithmetic number, because the mean of its divisors is an integer number (3124485).

Almost surely, 2^42025428 is an apocalyptic number.

It is an amenable number.

42025428 is an abundant number, since it is smaller than the sum of its proper divisors (70456032).

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

42025428 is a wasteful number, since it uses less digits than its factorization.

42025428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68696 (or 68691 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

The square root of 42025428 is about 6482.7022143548. The cubic root of 42025428 is about 347.6727998648.

The spelling of 42025428 in words is "forty-two million, twenty-five thousand, four hundred twenty-eight".