420505004 has 6 divisors (see below), whose sum is σ = 735883764. Its totient is φ = 210252500.

The previous prime is 420505003. The next prime is 420505051. The reversal of 420505004 is 400505024.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (420505003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52563122 + ... + 52563129.

It is an arithmetic number, because the mean of its divisors is an integer number (122647294).

Almost surely, 2^420505004 is an apocalyptic number.

It is an amenable number.

420505004 is a deficient number, since it is larger than the sum of its proper divisors (315378760).

420505004 is a wasteful number, since it uses less digits than its factorization.

420505004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105126255 (or 105126253 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 420505004 is about 20506.2186665411. The cubic root of 420505004 is about 749.1872701302.

Adding to 420505004 its sum of digits (20), we get a palindrome (420505024).

The spelling of 420505004 in words is "four hundred twenty million, five hundred five thousand, four".