421211434015 has 4 divisors (see below), whose sum is σ = 505453720824. Its totient is φ = 336969147208.

The previous prime is 421211433983. The next prime is 421211434031. The reversal of 421211434015 is 510434112124.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 421211434015 - 2⁵ = 421211433983 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 42121143397 + ... + 42121143406.

It is an arithmetic number, because the mean of its divisors is an integer number (126363430206).

Almost surely, 2^421211434015 is an apocalyptic number.

421211434015 is a deficient number, since it is larger than the sum of its proper divisors (84242286809).

421211434015 is an equidigital number, since it uses as much as digits as its factorization.

421211434015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84242286808.

The product of its (nonzero) digits is 3840, while the sum is 28.

Adding to 421211434015 its reverse (510434112124), we get a palindrome (931645546139).

The spelling of 421211434015 in words is "four hundred twenty-one billion, two hundred eleven million, four hundred thirty-four thousand, fifteen".