421361123 has 4 divisors (see below), whose sum is σ = 424189200. Its totient is φ = 418533048.

The previous prime is 421361117. The next prime is 421361131. The reversal of 421361123 is 321163124.

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 421361123 - 2⁸ = 421360867 is a prime.

It is a super-2 number, since 2×421361123² = 355090391951642258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421361323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1413815 + ... + 1414112.

It is an arithmetic number, because the mean of its divisors is an integer number (106047300).

Almost surely, 2^421361123 is an apocalyptic number.

421361123 is a deficient number, since it is larger than the sum of its proper divisors (2828077).

421361123 is a wasteful number, since it uses less digits than its factorization.

421361123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2828076.

The product of its digits is 864, while the sum is 23.

The square root of 421361123 is about 20527.0826714368. The cubic root of 421361123 is about 749.6953565696.

The spelling of 421361123 in words is "four hundred twenty-one million, three hundred sixty-one thousand, one hundred twenty-three".