42213723 has 16 divisors (see below), whose sum is σ = 59523072. Its totient is φ = 26568000.

The previous prime is 42213719. The next prime is 42213757. The reversal of 42213723 is 32731224.

It is not a de Polignac number, because 42213723 - 2² = 42213719 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42213693 and 42213702.

It is not an unprimeable number, because it can be changed into a prime (42213713) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1723 + ... + 9348.

It is an arithmetic number, because the mean of its divisors is an integer number (3720192).

Almost surely, 2^42213723 is an apocalyptic number.

42213723 is a deficient number, since it is larger than the sum of its proper divisors (17309349).

42213723 is a wasteful number, since it uses less digits than its factorization.

42213723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11146.

The product of its digits is 2016, while the sum is 24.

The square root of 42213723 is about 6497.2088622731. The cubic root of 42213723 is about 348.1912758091.

Adding to 42213723 its reverse (32731224), we get a palindrome (74944947).

The spelling of 42213723 in words is "forty-two million, two hundred thirteen thousand, seven hundred twenty-three".