420244132 has 72 divisors (see below), whose sum is σ = 964188288. Its totient is φ = 156583680.

The previous prime is 420244127. The next prime is 420244151. The reversal of 420244132 is 231442024.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 75228 + ... + 80620.

It is an arithmetic number, because the mean of its divisors is an integer number (13391504).

Almost surely, 2^420244132 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 420244132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (482094144).

420244132 is an abundant number, since it is smaller than the sum of its proper divisors (543944156).

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

420244132 is a wasteful number, since it uses less digits than its factorization.

420244132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5449 (or 5436 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 420244132 is about 20499.8568775492. The cubic root of 420244132 is about 749.0323116798.

Adding to 420244132 its reverse (231442024), we get a palindrome (651686156).

The spelling of 420244132 in words is "four hundred twenty million, two hundred forty-four thousand, one hundred thirty-two".