420245677123 has 4 divisors (see below), whose sum is σ = 420256327120. Its totient is φ = 420235027128.

The previous prime is 420245677097. The next prime is 420245677139. The reversal of 420245677123 is 321776542024.

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 420245677123 - 2²⁵ = 420212122691 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 420245677123.

It is not an unprimeable number, because it can be changed into a prime (420245677153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5265588 + ... + 5344801.

It is an arithmetic number, because the mean of its divisors is an integer number (105064081780).

Almost surely, 2^420245677123 is an apocalyptic number.

420245677123 is a deficient number, since it is larger than the sum of its proper divisors (10649997).

420245677123 is a wasteful number, since it uses less digits than its factorization.

420245677123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10649996.

The product of its (nonzero) digits is 564480, while the sum is 43.

The spelling of 420245677123 in words is "four hundred twenty billion, two hundred forty-five million, six hundred seventy-seven thousand, one hundred twenty-three".