42711123 has 32 divisors (see below), whose sum is σ = 74221056. Its totient is φ = 21201408.

The previous prime is 42711121. The next prime is 42711127. The reversal of 42711123 is 32111724.

42711123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42711123 - 2¹ = 42711121 is a prime.

It is a super-2 number, since 2×42711123² = 3648480055842258, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 42711123.

It is not an unprimeable number, because it can be changed into a prime (42711121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40 + ... + 9242.

It is an arithmetic number, because the mean of its divisors is an integer number (2319408).

Almost surely, 2^42711123 is an apocalyptic number.

42711123 is a deficient number, since it is larger than the sum of its proper divisors (31509933).

42711123 is a wasteful number, since it uses less digits than its factorization.

42711123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9243.

The product of its digits is 336, while the sum is 21.

The square root of 42711123 is about 6535.3747405945. The cubic root of 42711123 is about 349.5535068437.

Adding to 42711123 its reverse (32111724), we get a palindrome (74822847).

The spelling of 42711123 in words is "forty-two million, seven hundred eleven thousand, one hundred twenty-three".