42725768 has 12 divisors (see below), whose sum is σ = 80145495. Its totient is φ = 21353640.

The previous prime is 42725759. The next prime is 42725783. The reversal of 42725768 is 86752724.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 21362884 + 21362884 = 4622^2 + 4622^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=4622.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 17333 + ... + 19643.

Almost surely, 2^42725768 is an apocalyptic number.

It is an amenable number.

42725768 is a deficient number, since it is larger than the sum of its proper divisors (37419727).

42725768 is an frugal number, since it uses more digits than its factorization.

42725768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4628 (or 2313 counting only the distinct ones).

The product of its digits is 188160, while the sum is 41.

The square root of 42725768 is about 6536.4950852884. The cubic root of 42725768 is about 349.5934544870.

The spelling of 42725768 in words is "forty-two million, seven hundred twenty-five thousand, seven hundred sixty-eight".