420240478147 has 4 divisors (see below), whose sum is σ = 480274832176. Its totient is φ = 360206124120.

The previous prime is 420240478093. The next prime is 420240478199. The reversal of 420240478147 is 741874042024.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 420240478147 - 2¹⁵ = 420240445379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420240478247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30017177004 + ... + 30017177017.

It is an arithmetic number, because the mean of its divisors is an integer number (120068708044).

Almost surely, 2^420240478147 is an apocalyptic number.

420240478147 is a deficient number, since it is larger than the sum of its proper divisors (60034354029).

420240478147 is an equidigital number, since it uses as much as digits as its factorization.

420240478147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60034354028.

The product of its (nonzero) digits is 401408, while the sum is 43.

The spelling of 420240478147 in words is "four hundred twenty billion, two hundred forty million, four hundred seventy-eight thousand, one hundred forty-seven".