420111512 has 16 divisors (see below), whose sum is σ = 789984360. Its totient is φ = 209449024.

The previous prime is 420111511. The next prime is 420111529. The reversal of 420111512 is 215111024.

It is a super-2 number, since 2×420111512² = 352987365029852288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420111511) by changing a digit.

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, 72893 + ... + 78444.

Almost surely, 2^420111512 is an apocalyptic number.

It is an amenable number.

420111512 is a deficient number, since it is larger than the sum of its proper divisors (369872848).

420111512 is a wasteful number, since it uses less digits than its factorization.

420111512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151690 (or 151686 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 420111512 is about 20496.6219655825. The cubic root of 420111512 is about 748.9535105664.

Adding to 420111512 its reverse (215111024), we get a palindrome (635222536).

The spelling of 420111512 in words is "four hundred twenty million, one hundred eleven thousand, five hundred twelve".