420012555 has 8 divisors (see below), whose sum is σ = 672020112. Its totient is φ = 224006688.

The previous prime is 420012443. The next prime is 420012577. The reversal of 420012555 is 555210024.

It is a happy number.

420012555 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 420012555 - 2¹⁵ = 419979787 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 14000404 + ... + 14000433.

It is an arithmetic number, because the mean of its divisors is an integer number (84002514).

Almost surely, 2^420012555 is an apocalyptic number.

420012555 is a deficient number, since it is larger than the sum of its proper divisors (252007557).

420012555 is a wasteful number, since it uses less digits than its factorization.

420012555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28000845.

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 420012555 is about 20494.2078402655. The cubic root of 420012555 is about 748.8947007739.

Adding to 420012555 its reverse (555210024), we get a palindrome (975222579).

The spelling of 420012555 in words is "four hundred twenty million, twelve thousand, five hundred fifty-five".