421244121 has 8 divisors (see below), whose sum is σ = 562804704. Its totient is φ = 280256480.

The previous prime is 421244113. The next prime is 421244123. The reversal of 421244121 is 121442124.

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

It is a cyclic number.

It is not a de Polignac number, because 421244121 - 2³ = 421244113 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (421244123) 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, 141516 + ... + 144461.

It is an arithmetic number, because the mean of its divisors is an integer number (70350588).

Almost surely, 2^421244121 is an apocalyptic number.

It is an amenable number.

421244121 is a deficient number, since it is larger than the sum of its proper divisors (141560583).

421244121 is a wasteful number, since it uses less digits than its factorization.

421244121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286471.

The product of its digits is 512, while the sum is 21.

The square root of 421244121 is about 20524.2325313275. The cubic root of 421244121 is about 749.6259592668.

Adding to 421244121 its reverse (121442124), we get a palindrome (542686245).

The spelling of 421244121 in words is "four hundred twenty-one million, two hundred forty-four thousand, one hundred twenty-one".