42725041 has 4 divisors (see below), whose sum is σ = 42747172. Its totient is φ = 42702912.

The previous prime is 42725009. The next prime is 42725051. The reversal of 42725041 is 14052724.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11532816 + 31192225 = 3396^2 + 5585^2 .

It is a cyclic number.

It is not a de Polignac number, because 42725041 - 2⁵ = 42725009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42724997 and 42725015.

It is not an unprimeable number, because it can be changed into a prime (42725051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7860 + ... + 12133.

It is an arithmetic number, because the mean of its divisors is an integer number (10686793).

Almost surely, 2^42725041 is an apocalyptic number.

It is an amenable number.

42725041 is a deficient number, since it is larger than the sum of its proper divisors (22131).

42725041 is a wasteful number, since it uses less digits than its factorization.

42725041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22130.

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 42725041 is about 6536.4394742092. The cubic root of 42725041 is about 349.5914716408.

Adding to 42725041 its reverse (14052724), we get a palindrome (56777765).

The spelling of 42725041 in words is "forty-two million, seven hundred twenty-five thousand, forty-one".