421125342 has 64 divisors (see below), whose sum is σ = 948319488. Its totient is φ = 123552000.

The previous prime is 421125337. The next prime is 421125347. The reversal of 421125342 is 243521124.

It is an interprime number because it is at equal distance from previous prime (421125337) and next prime (421125347).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421125347) 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 31 ways as a sum of consecutive naturals, for example, 808042 + ... + 808562.

It is an arithmetic number, because the mean of its divisors is an integer number (14817492).

Almost surely, 2^421125342 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421125342, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (474159744).

421125342 is an abundant number, since it is smaller than the sum of its proper divisors (527194146).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

421125342 is a wasteful number, since it uses less digits than its factorization.

421125342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 905.

The product of its digits is 1920, while the sum is 24.

The square root of 421125342 is about 20521.3386990225. The cubic root of 421125342 is about 749.5554948278. Note that the first 3 decimals are identical.

Adding to 421125342 its reverse (243521124), we get a palindrome (664646466).

The spelling of 421125342 in words is "four hundred twenty-one million, one hundred twenty-five thousand, three hundred forty-two".