42124273 has 4 divisors (see below), whose sum is σ = 44341360. Its totient is φ = 39907188.

The previous prime is 42124231. The next prime is 42124279. The reversal of 42124273 is 37242124.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42124273 - 2²¹ = 40027121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42124279) 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, 1108515 + ... + 1108552.

It is an arithmetic number, because the mean of its divisors is an integer number (11085340).

Almost surely, 2^42124273 is an apocalyptic number.

It is an amenable number.

42124273 is a deficient number, since it is larger than the sum of its proper divisors (2217087).

42124273 is a wasteful number, since it uses less digits than its factorization.

42124273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2217086.

The product of its digits is 2688, while the sum is 25.

The square root of 42124273 is about 6490.3214866446. The cubic root of 42124273 is about 347.9451652051.

Adding to 42124273 its reverse (37242124), we get a palindrome (79366397).

The spelling of 42124273 in words is "forty-two million, one hundred twenty-four thousand, two hundred seventy-three".