420236434187027 has 32 divisors (see below), whose sum is σ = 432479864217600. Its totient is φ = 408182804254368.

The previous prime is 420236434186963. The next prime is 420236434187149. The reversal of 420236434187027 is 720781434632024.

It is a cyclic number.

It is not a de Polignac number, because 420236434187027 - 2⁶ = 420236434186963 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 420236434187027.

It is not an unprimeable number, because it can be changed into a prime (420236434187527) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17922811418 + ... + 17922834864.

It is an arithmetic number, because the mean of its divisors is an integer number (13514995756800).

Almost surely, 2^{420236434187027} is an apocalyptic number.

420236434187027 is a deficient number, since it is larger than the sum of its proper divisors (12243430030573).

420236434187027 is a wasteful number, since it uses less digits than its factorization.

420236434187027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27935.

The product of its (nonzero) digits is 10838016, while the sum is 53.

The spelling of 420236434187027 in words is "four hundred twenty trillion, two hundred thirty-six billion, four hundred thirty-four million, one hundred eighty-seven thousand, twenty-seven".