420934417687 has 8 divisors (see below), whose sum is σ = 481119746976. Its totient is φ = 360762048672.

The previous prime is 420934417669. The next prime is 420934417733. The reversal of 420934417687 is 786714439024.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420934417687 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420934417667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3170368 + ... + 3300469.

It is an arithmetic number, because the mean of its divisors is an integer number (60139968372).

Almost surely, 2^420934417687 is an apocalyptic number.

420934417687 is a deficient number, since it is larger than the sum of its proper divisors (60185329289).

420934417687 is an equidigital number, since it uses as much as digits as its factorization.

420934417687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6480137.

The product of its (nonzero) digits is 8128512, while the sum is 55.

The spelling of 420934417687 in words is "four hundred twenty billion, nine hundred thirty-four million, four hundred seventeen thousand, six hundred eighty-seven".