42230121 has 4 divisors (see below), whose sum is σ = 56306832. Its totient is φ = 28153412.

The previous prime is 42230107. The next prime is 42230131. The reversal of 42230121 is 12103224.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42230121 - 2¹⁰ = 42229097 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42230121.

It is not an unprimeable number, because it can be changed into a prime (42230101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7038351 + ... + 7038356.

It is an arithmetic number, because the mean of its divisors is an integer number (14076708).

Almost surely, 2^42230121 is an apocalyptic number.

It is an amenable number.

42230121 is a deficient number, since it is larger than the sum of its proper divisors (14076711).

42230121 is a wasteful number, since it uses less digits than its factorization.

42230121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14076710.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 42230121 is about 6498.4706662414. The cubic root of 42230121 is about 348.2363551576.

Adding to 42230121 its reverse (12103224), we get a palindrome (54333345).

The spelling of 42230121 in words is "forty-two million, two hundred thirty thousand, one hundred twenty-one".