420104121234 has 128 divisors (see below), whose sum is σ = 986037276672. Its totient is φ = 116853166080.

The previous prime is 420104121233. The next prime is 420104121289. The reversal of 420104121234 is 432121401024.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (420104121233) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 151278454 + ... + 151281230.

It is an arithmetic number, because the mean of its divisors is an integer number (7703416224).

Almost surely, 2^420104121234 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 420104121234, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (493018638336).

420104121234 is an abundant number, since it is smaller than the sum of its proper divisors (565933155438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420104121234 is a wasteful number, since it uses less digits than its factorization.

420104121234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3480.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 420104121234 its reverse (432121401024), we get a palindrome (852225522258).

The spelling of 420104121234 in words is "four hundred twenty billion, one hundred four million, one hundred twenty-one thousand, two hundred thirty-four".