421346542661 has 8 divisors (see below), whose sum is σ = 459665452800. Its totient is φ = 383030079040.

The previous prime is 421346542609. The next prime is 421346542681. The reversal of 421346542661 is 166245643124.

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-421346542661 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 (421346542601) 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, 241796 + ... + 949293.

It is an arithmetic number, because the mean of its divisors is an integer number (57458181600).

Almost surely, 2^421346542661 is an apocalyptic number.

It is an amenable number.

421346542661 is a deficient number, since it is larger than the sum of its proper divisors (38318910139).

421346542661 is a wasteful number, since it uses less digits than its factorization.

421346542661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1223259.

The product of its digits is 829440, while the sum is 44.

The spelling of 421346542661 in words is "four hundred twenty-one billion, three hundred forty-six million, five hundred forty-two thousand, six hundred sixty-one".