42122428 has 24 divisors (see below), whose sum is σ = 78157184. Its totient is φ = 19828800.

The previous prime is 42122393. The next prime is 42122429. The reversal of 42122428 is 82422124.

42122428 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×42122428³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42122429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3 + ... + 9178.

Almost surely, 2^42122428 is an apocalyptic number.

It is an amenable number.

42122428 is a deficient number, since it is larger than the sum of its proper divisors (36034756).

42122428 is a wasteful number, since it uses less digits than its factorization.

42122428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9253 (or 9251 counting only the distinct ones).

The product of its digits is 2048, while the sum is 25.

The square root of 42122428 is about 6490.1793503724. The cubic root of 42122428 is about 347.9400852504.

The spelling of 42122428 in words is "forty-two million, one hundred twenty-two thousand, four hundred twenty-eight".