42650393 has 4 divisors (see below), whose sum is σ = 42671460. Its totient is φ = 42629328.

The previous prime is 42650371. The next prime is 42650423. The reversal of 42650393 is 39305624.

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 16711744 + 25938649 = 4088^2 + 5093^2 .

It is a cyclic number.

It is not a de Polignac number, because 42650393 - 2¹⁸ = 42388249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42650353) 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, 7130 + ... + 11667.

It is an arithmetic number, because the mean of its divisors is an integer number (10667865).

Almost surely, 2^42650393 is an apocalyptic number.

It is an amenable number.

42650393 is a deficient number, since it is larger than the sum of its proper divisors (21067).

42650393 is a wasteful number, since it uses less digits than its factorization.

42650393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21066.

The product of its (nonzero) digits is 19440, while the sum is 32.

The square root of 42650393 is about 6530.7268355061. The cubic root of 42650393 is about 349.3877541285.

The spelling of 42650393 in words is "forty-two million, six hundred fifty thousand, three hundred ninety-three".