421001243210 has 8 divisors (see below), whose sum is σ = 757802237796. Its totient is φ = 168400497280.

The previous prime is 421001243209. The next prime is 421001243227. The reversal of 421001243210 is 12342100124.

It can be written as a sum of positive squares in 2 ways, for example, as 416940112681 + 4061130529 = 645709^2 + 63727^2 .

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

It is a super-2 number, since 2×421001243210² (a number of 24 digits) contains 22 as substring.

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, 21050062151 + ... + 21050062170.

Almost surely, 2^421001243210 is an apocalyptic number.

421001243210 is a deficient number, since it is larger than the sum of its proper divisors (336800994586).

421001243210 is a wasteful number, since it uses less digits than its factorization.

421001243210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42100124328.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 421001243210 its reverse (12342100124), we get a palindrome (433343343334).

The spelling of 421001243210 in words is "four hundred twenty-one billion, one million, two hundred forty-three thousand, two hundred ten".