421248867009 has 4 divisors (see below), whose sum is σ = 561665156016. Its totient is φ = 280832578004.

The previous prime is 421248867001. The next prime is 421248867031. The reversal of 421248867009 is 900768842124.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 421248867009 - 2³ = 421248867001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (421248867001) 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, 70208144499 + ... + 70208144504.

It is an arithmetic number, because the mean of its divisors is an integer number (140416289004).

Almost surely, 2^421248867009 is an apocalyptic number.

It is an amenable number.

421248867009 is a deficient number, since it is larger than the sum of its proper divisors (140416289007).

421248867009 is a wasteful number, since it uses less digits than its factorization.

421248867009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140416289006.

The product of its (nonzero) digits is 1548288, while the sum is 51.

The spelling of 421248867009 in words is "four hundred twenty-one billion, two hundred forty-eight million, eight hundred sixty-seven thousand, nine".