420267440571 has 32 divisors (see below), whose sum is σ = 620336709888. Its totient is φ = 250948938240.

The previous prime is 420267440557. The next prime is 420267440597. The reversal of 420267440571 is 175044762024.

It is not a de Polignac number, because 420267440571 - 2¹⁷ = 420267309499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (420267440471) 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, 2164140 + ... + 2350326.

It is an arithmetic number, because the mean of its divisors is an integer number (19385522184).

Almost surely, 2^420267440571 is an apocalyptic number.

420267440571 is a deficient number, since it is larger than the sum of its proper divisors (200069269317).

420267440571 is a wasteful number, since it uses less digits than its factorization.

420267440571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187211.

The product of its (nonzero) digits is 376320, while the sum is 42.

The spelling of 420267440571 in words is "four hundred twenty billion, two hundred sixty-seven million, four hundred forty thousand, five hundred seventy-one".