420120411123 has 16 divisors (see below), whose sum is σ = 646783316480. Its totient is φ = 237593869056.

The previous prime is 420120411107. The next prime is 420120411127. The reversal of 420120411123 is 321114021024.

It is not a de Polignac number, because 420120411123 - 2⁴ = 420120411107 is a prime.

It is a super-2 number, since 2×420120411123² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 420120411123.

It is not an unprimeable number, because it can be changed into a prime (420120411127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103120303 + ... + 103124376.

It is an arithmetic number, because the mean of its divisors is an integer number (40423957280).

Almost surely, 2^420120411123 is an apocalyptic number.

420120411123 is a deficient number, since it is larger than the sum of its proper divisors (226662905357).

420120411123 is a wasteful number, since it uses less digits than its factorization.

420120411123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206244786.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 420120411123 its reverse (321114021024), we get a palindrome (741234432147).

The spelling of 420120411123 in words is "four hundred twenty billion, one hundred twenty million, four hundred eleven thousand, one hundred twenty-three".