42124645 has 8 divisors (see below), whose sum is σ = 50914080. Its totient is φ = 33456720.

The previous prime is 42124637. The next prime is 42124651. The reversal of 42124645 is 54642124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42124645 - 2³ = 42124637 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29611 + ... + 31000.

It is an arithmetic number, because the mean of its divisors is an integer number (6364260).

Almost surely, 2^42124645 is an apocalyptic number.

It is an amenable number.

42124645 is a deficient number, since it is larger than the sum of its proper divisors (8789435).

42124645 is a wasteful number, since it uses less digits than its factorization.

42124645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60755.

The product of its digits is 7680, while the sum is 28.

The square root of 42124645 is about 6490.3501446378. The cubic root of 42124645 is about 347.9461894382.

Adding to 42124645 its reverse (54642124), we get a palindrome (96766769).

The spelling of 42124645 in words is "forty-two million, one hundred twenty-four thousand, six hundred forty-five".