421151 has 4 divisors (see below), whose sum is σ = 424992. Its totient is φ = 417312.

The previous prime is 421147. The next prime is 421159. The reversal of 421151 is 151124.

421151 is nontrivially palindromic in base 5.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 421151 - 2² = 421147 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421159) 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, 1751 + ... + 1976.

It is an arithmetic number, because the mean of its divisors is an integer number (106248).

2⁴²¹¹⁵¹ is an apocalyptic number.

421151 is a deficient number, since it is larger than the sum of its proper divisors (3841).

421151 is a wasteful number, since it uses less digits than its factorization.

421151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3840.

The product of its digits is 40, while the sum is 14.

The square root of 421151 is about 648.9614780555. The cubic root of 421151 is about 74.9570717298.

Adding to 421151 its reverse (151124), we get a palindrome (572275).

The spelling of 421151 in words is "four hundred twenty-one thousand, one hundred fifty-one".