42065722 has 8 divisors (see below), whose sum is σ = 64133172. Its totient is φ = 20688000.

The previous prime is 42065669. The next prime is 42065741. The reversal of 42065722 is 22756024.

It can be written as a sum of positive squares in 2 ways, for example, as 36348841 + 5716881 = 6029^2 + 2391^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172279 + ... + 172522.

Almost surely, 2^42065722 is an apocalyptic number.

42065722 is a deficient number, since it is larger than the sum of its proper divisors (22067450).

42065722 is a wasteful number, since it uses less digits than its factorization.

42065722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344864.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 42065722 is about 6485.8092787254. The cubic root of 42065722 is about 347.7838806519.

The spelling of 42065722 in words is "forty-two million, sixty-five thousand, seven hundred twenty-two".