42710725 has 12 divisors (see below), whose sum is σ = 54254340. Its totient is φ = 33334400.

The previous prime is 42710719. The next prime is 42710737. The reversal of 42710725 is 52701724.

It can be written as a sum of positive squares in 6 ways, for example, as 14333796 + 28376929 = 3786^2 + 5327^2 .

It is not a de Polignac number, because 42710725 - 2⁵ = 42710693 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42710693 and 42710702.

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, 19810 + ... + 21859.

It is an arithmetic number, because the mean of its divisors is an integer number (4521195).

Almost surely, 2^42710725 is an apocalyptic number.

It is an amenable number.

42710725 is a deficient number, since it is larger than the sum of its proper divisors (11543615).

42710725 is a wasteful number, since it uses less digits than its factorization.

42710725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41720 (or 41715 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 28.

The square root of 42710725 is about 6535.3442908542. The cubic root of 42710725 is about 349.5524210787.

Subtracting 42710725 from its reverse (52701724), we obtain a palindrome (9990999).

The spelling of 42710725 in words is "forty-two million, seven hundred ten thousand, seven hundred twenty-five".