420122504 has 8 divisors (see below), whose sum is σ = 787729710. Its totient is φ = 210061248.

The previous prime is 420122489. The next prime is 420122537. The reversal of 420122504 is 405221024.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 416241604 + 3880900 = 20402^2 + 1970^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26257649 + ... + 26257664.

Almost surely, 2^420122504 is an apocalyptic number.

It is an amenable number.

420122504 is a deficient number, since it is larger than the sum of its proper divisors (367607206).

420122504 is a wasteful number, since it uses less digits than its factorization.

420122504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52515319 (or 52515315 counting only the distinct ones).

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

The square root of 420122504 is about 20496.8901055746. The cubic root of 420122504 is about 748.9600425029.

Adding to 420122504 its reverse (405221024), we get a palindrome (825343528).

The spelling of 420122504 in words is "four hundred twenty million, one hundred twenty-two thousand, five hundred four".