42420441 has 32 divisors (see below), whose sum is σ = 68456448. Its totient is φ = 22841280.

The previous prime is 42420439. The next prime is 42420451. The reversal of 42420441 is 14402424.

It is not a de Polignac number, because 42420441 - 2¹ = 42420439 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (42420401) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33675 + ... + 34911.

It is an arithmetic number, because the mean of its divisors is an integer number (2139264).

Almost surely, 2^42420441 is an apocalyptic number.

It is an amenable number.

42420441 is a deficient number, since it is larger than the sum of its proper divisors (26036007).

42420441 is a wasteful number, since it uses less digits than its factorization.

42420441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1341.

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 42420441 is about 6513.0976501201. The cubic root of 42420441 is about 348.7587076615.

Adding to 42420441 its reverse (14402424), we get a palindrome (56822865).

The spelling of 42420441 in words is "forty-two million, four hundred twenty thousand, four hundred forty-one".