42124928 has 16 divisors (see below), whose sum is σ = 83921010. Its totient is φ = 21062400.

The previous prime is 42124913. The next prime is 42124949. The reversal of 42124928 is 82942124.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 41886784 + 238144 = 6472^2 + 488^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 42124894 and 42124903.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164423 + ... + 164678.

Almost surely, 2^42124928 is an apocalyptic number.

It is an amenable number.

42124928 is a deficient number, since it is larger than the sum of its proper divisors (41796082).

42124928 is an equidigital number, since it uses as much as digits as its factorization.

42124928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329115 (or 329103 counting only the distinct ones).

The product of its digits is 9216, while the sum is 32.

The square root of 42124928 is about 6490.3719461985. The cubic root of 42124928 is about 347.9469686222.

The spelling of 42124928 in words is "forty-two million, one hundred twenty-four thousand, nine hundred twenty-eight".