420791052 has 72 divisors (see below), whose sum is σ = 1085918400. Its totient is φ = 126721760.

The previous prime is 420791029. The next prime is 420791057. The reversal of 420791052 is 250197024.

It is not an unprimeable number, because it can be changed into a prime (420791057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 259099 + ... + 260717.

It is an arithmetic number, because the mean of its divisors is an integer number (15082200).

Almost surely, 2^420791052 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 420791052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (542959200).

420791052 is an abundant number, since it is smaller than the sum of its proper divisors (665127348).

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

420791052 is a wasteful number, since it uses less digits than its factorization.

420791052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1827 (or 1814 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 420791052 is about 20513.1921455438. The cubic root of 420791052 is about 749.3571095244.

It can be divided in two parts, 4207 and 91052, that added together give a palindrome (95259).

The spelling of 420791052 in words is "four hundred twenty million, seven hundred ninety-one thousand, fifty-two".