42722045 has 8 divisors (see below), whose sum is σ = 51315000. Its totient is φ = 34145280.

The previous prime is 42722039. The next prime is 42722083. The reversal of 42722045 is 54022724.

It can be written as a sum of positive squares in 4 ways, for example, as 6853924 + 35868121 = 2618^2 + 5989^2 .

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

It is not a de Polignac number, because 42722045 - 2⁶ = 42721981 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2825 + ... + 9665.

It is an arithmetic number, because the mean of its divisors is an integer number (6414375).

Almost surely, 2^42722045 is an apocalyptic number.

It is an amenable number.

42722045 is a deficient number, since it is larger than the sum of its proper divisors (8592955).

42722045 is a wasteful number, since it uses less digits than its factorization.

42722045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8095.

The product of its (nonzero) digits is 4480, while the sum is 26.

The square root of 42722045 is about 6536.2102934346. The cubic root of 42722045 is about 349.5833000041.

Adding to 42722045 its reverse (54022724), we get a palindrome (96744769).

The spelling of 42722045 in words is "forty-two million, seven hundred twenty-two thousand, forty-five".