42421030 has 16 divisors (see below), whose sum is σ = 77405184. Its totient is φ = 16735680.

The previous prime is 42421021. The next prime is 42421033. The reversal of 42421030 is 3012424.

It is a junction number, because it is equal to n+sod(n) for n = 42420995 and 42421013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42421033) 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, 28326 + ... + 29785.

It is an arithmetic number, because the mean of its divisors is an integer number (4837824).

Almost surely, 2^42421030 is an apocalyptic number.

42421030 is a deficient number, since it is larger than the sum of its proper divisors (34984154).

42421030 is a wasteful number, since it uses less digits than its factorization.

42421030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58191.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 42421030 is about 6513.1428665430. The cubic root of 42421030 is about 348.7603218041.

Adding to 42421030 its reverse (3012424), we get a palindrome (45433454).

The spelling of 42421030 in words is "forty-two million, four hundred twenty-one thousand, thirty".