420145004 has 24 divisors (see below), whose sum is σ = 787894128. Its totient is φ = 195330560.

The previous prime is 420144997. The next prime is 420145009. The reversal of 420145004 is 400541024.

It is not an unprimeable number, because it can be changed into a prime (420145009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31577 + ... + 42864.

It is an arithmetic number, because the mean of its divisors is an integer number (32828922).

Almost surely, 2^420145004 is an apocalyptic number.

It is an amenable number.

420145004 is a deficient number, since it is larger than the sum of its proper divisors (367749124).

420145004 is a wasteful number, since it uses less digits than its factorization.

420145004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74545 (or 74543 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 420145004 is about 20497.4389619777. The cubic root of 420145004 is about 748.9734126509.

Adding to 420145004 its reverse (400541024), we get a palindrome (820686028).

The spelling of 420145004 in words is "four hundred twenty million, one hundred forty-five thousand, four".