42124305 has 16 divisors (see below), whose sum is σ = 68967360. Its totient is φ = 21943488.

The previous prime is 42124297. The next prime is 42124309. The reversal of 42124305 is 50342124.

It is not a de Polignac number, because 42124305 - 2³ = 42124297 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42124309) 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, 32010 + ... + 33299.

It is an arithmetic number, because the mean of its divisors is an integer number (4310460).

Almost surely, 2^42124305 is an apocalyptic number.

It is an amenable number.

42124305 is a deficient number, since it is larger than the sum of its proper divisors (26843055).

42124305 is a wasteful number, since it uses less digits than its factorization.

42124305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65360.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 42124305 is about 6490.3239518533. The cubic root of 42124305 is about 347.9452533114.

Adding to 42124305 its reverse (50342124), we get a palindrome (92466429).

The spelling of 42124305 in words is "forty-two million, one hundred twenty-four thousand, three hundred five".