42421888 has 32 divisors (see below), whose sum is σ = 87246720. Its totient is φ = 20524800.

The previous prime is 42421837. The next prime is 42421933. The reversal of 42421888 is 88812424.

It is a tau number, because it is divible by the number of its divisors (32).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1378 + ... + 9313.

It is an arithmetic number, because the mean of its divisors is an integer number (2726460).

Almost surely, 2^42421888 is an apocalyptic number.

It is an amenable number.

42421888 is an abundant number, since it is smaller than the sum of its proper divisors (44824832).

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

42421888 is a wasteful number, since it uses less digits than its factorization.

42421888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10736 (or 10724 counting only the distinct ones).

The product of its digits is 32768, while the sum is 37.

The square root of 42421888 is about 6513.2087330286. The cubic root of 42421888 is about 348.7626731091.

The spelling of 42421888 in words is "forty-two million, four hundred twenty-one thousand, eight hundred eighty-eight".