420404754 has 128 divisors (see below), whose sum is σ = 1128038400. Its totient is φ = 101148480.

The previous prime is 420404753. The next prime is 420404771. The reversal of 420404754 is 457404024.

It is not an unprimeable number, because it can be changed into a prime (420404753) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 412057 + ... + 413075.

It is an arithmetic number, because the mean of its divisors is an integer number (8812800).

Almost surely, 2^420404754 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 420404754, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (564019200).

420404754 is an abundant number, since it is smaller than the sum of its proper divisors (707633646).

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

420404754 is a wasteful number, since it uses less digits than its factorization.

420404754 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1108.

The product of its (nonzero) digits is 17920, while the sum is 30.

The square root of 420404754 is about 20503.7741403869. The cubic root of 420404754 is about 749.1277290289.

Adding to 420404754 its reverse (457404024), we get a palindrome (877808778).

The spelling of 420404754 in words is "four hundred twenty million, four hundred four thousand, seven hundred fifty-four".