421949878106 has 8 divisors (see below), whose sum is σ = 632928361044. Its totient is φ = 210973757760.

The previous prime is 421949878073. The next prime is 421949878111. The reversal of 421949878106 is 601878949124.

It can be written as a sum of positive squares in 2 ways, for example, as 380744532025 + 41205346081 = 617045^2 + 202991^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42365 + ... + 919616.

Almost surely, 2^421949878106 is an apocalyptic number.

421949878106 is a deficient number, since it is larger than the sum of its proper divisors (210978482938).

421949878106 is a wasteful number, since it uses less digits than its factorization.

421949878106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1181296.

The product of its (nonzero) digits is 6967296, while the sum is 59.

The spelling of 421949878106 in words is "four hundred twenty-one billion, nine hundred forty-nine million, eight hundred seventy-eight thousand, one hundred six".