42335421 has 8 divisors (see below), whose sum is σ = 56515104. Its totient is φ = 28189680.

The previous prime is 42335413. The next prime is 42335443. The reversal of 42335421 is 12453324.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42335421 - 2³ = 42335413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42335391 and 42335400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42335471) 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, 5415 + ... + 10676.

It is an arithmetic number, because the mean of its divisors is an integer number (7064388).

Almost surely, 2^42335421 is an apocalyptic number.

It is an amenable number.

42335421 is a deficient number, since it is larger than the sum of its proper divisors (14179683).

42335421 is a wasteful number, since it uses less digits than its factorization.

42335421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16971.

The product of its digits is 2880, while the sum is 24.

The square root of 42335421 is about 6506.5675282748. The cubic root of 42335421 is about 348.5255551522.

Adding to 42335421 its reverse (12453324), we get a palindrome (54788745).

The spelling of 42335421 in words is "forty-two million, three hundred thirty-five thousand, four hundred twenty-one".