42421452 has 48 divisors (see below), whose sum is σ = 105786240. Its totient is φ = 13191552.

The previous prime is 42421411. The next prime is 42421459. The reversal of 42421452 is 25412424.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (42421459) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13888 + ... + 16664.

It is an arithmetic number, because the mean of its divisors is an integer number (2203880).

Almost surely, 2^42421452 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42421452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52893120).

42421452 is an abundant number, since it is smaller than the sum of its proper divisors (63364788).

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

42421452 is a wasteful number, since it uses less digits than its factorization.

42421452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2870 (or 2868 counting only the distinct ones).

The product of its digits is 2560, while the sum is 24.

The square root of 42421452 is about 6513.1752624968. The cubic root of 42421452 is about 348.7614782774.

Adding to 42421452 its reverse (25412424), we get a palindrome (67833876).

Subtracting from 42421452 its reverse (25412424), we obtain a triangular number (17009028 = T₅₈₃₂).

The spelling of 42421452 in words is "forty-two million, four hundred twenty-one thousand, four hundred fifty-two".