420502312 has 16 divisors (see below), whose sum is σ = 788827860. Its totient is φ = 210148224.

The previous prime is 420502297. The next prime is 420502331. The reversal of 420502312 is 213205024.

It can be written as a sum of positive squares in 2 ways, for example, as 380484036 + 40018276 = 19506^2 + 6326^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 420502312.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 6148 + ... + 29644.

Almost surely, 2^420502312 is an apocalyptic number.

It is an amenable number.

420502312 is a deficient number, since it is larger than the sum of its proper divisors (368325548).

420502312 is a wasteful number, since it uses less digits than its factorization.

420502312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25740 (or 25736 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 420502312 is about 20506.1530278109. The cubic root of 420502312 is about 749.1856714045.

Adding to 420502312 its reverse (213205024), we get a palindrome (633707336).

It can be divided in two parts, 42050 and 2312, that multiplied together give a square (97219600 = 9860²).

The spelling of 420502312 in words is "four hundred twenty million, five hundred two thousand, three hundred twelve".