42427420 has 24 divisors (see below), whose sum is σ = 101826144. Its totient is φ = 14546496.

The previous prime is 42427409. The next prime is 42427421. The reversal of 42427420 is 2472424.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42427421) by changing a digit.

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, 151387 + ... + 151666.

It is an arithmetic number, because the mean of its divisors is an integer number (4242756).

Almost surely, 2^42427420 is an apocalyptic number.

It is an amenable number.

42427420 is an abundant number, since it is smaller than the sum of its proper divisors (59398724).

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

42427420 is a wasteful number, since it uses less digits than its factorization.

42427420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303069 (or 303067 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 25.

The square root of 42427420 is about 6513.6333946577. The cubic root of 42427420 is about 348.7778325102. Note that the first 3 decimals are identical.

Adding to 42427420 its reverse (2472424), we get a palindrome (44899844).

The spelling of 42427420 in words is "forty-two million, four hundred twenty-seven thousand, four hundred twenty".