42124872 has 32 divisors (see below), whose sum is σ = 105763680. Its totient is φ = 13981440.

The previous prime is 42124871. The next prime is 42124909. The reversal of 42124872 is 27842124.

It is not an unprimeable number, because it can be changed into a prime (42124871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2143 + ... + 9425.

It is an arithmetic number, because the mean of its divisors is an integer number (3305115).

Almost surely, 2^42124872 is an apocalyptic number.

It is an amenable number.

42124872 is an abundant number, since it is smaller than the sum of its proper divisors (63638808).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42124872 is a wasteful number, since it uses less digits than its factorization.

42124872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7533 (or 7529 counting only the distinct ones).

The product of its digits is 7168, while the sum is 30.

The square root of 42124872 is about 6490.3676321145. The cubic root of 42124872 is about 347.9468144377.

Adding to 42124872 its reverse (27842124), we get a palindrome (69966996).

The spelling of 42124872 in words is "forty-two million, one hundred twenty-four thousand, eight hundred seventy-two".