421241023 has 4 divisors (see below), whose sum is σ = 481418320. Its totient is φ = 361063728.

The previous prime is 421241017. The next prime is 421241071. The reversal of 421241023 is 320142124.

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 421241023 - 2⁵ = 421240991 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 (421241123) 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, 30088638 + ... + 30088651.

It is an arithmetic number, because the mean of its divisors is an integer number (120354580).

Almost surely, 2^421241023 is an apocalyptic number.

421241023 is a deficient number, since it is larger than the sum of its proper divisors (60177297).

421241023 is an equidigital number, since it uses as much as digits as its factorization.

421241023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60177296.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 421241023 is about 20524.1570594263. The cubic root of 421241023 is about 749.6241215779.

Adding to 421241023 its reverse (320142124), we get a palindrome (741383147).

The spelling of 421241023 in words is "four hundred twenty-one million, two hundred forty-one thousand, twenty-three".