420121101243 has 16 divisors (see below), whose sum is σ = 570861478656. Its totient is φ = 274733153760.

The previous prime is 420121101227. The next prime is 420121101263. The reversal of 420121101243 is 342101121024.

420121101243 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 420121101243 - 2⁴ = 420121101227 is a prime.

It is a super-2 number, since 2×420121101243² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (420121101263) 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, 397296 + ... + 999042.

It is an arithmetic number, because the mean of its divisors is an integer number (35678842416).

Almost surely, 2^420121101243 is an apocalyptic number.

420121101243 is a deficient number, since it is larger than the sum of its proper divisors (150740377413).

420121101243 is a wasteful number, since it uses less digits than its factorization.

420121101243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606194.

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

Adding to 420121101243 its reverse (342101121024), we get a palindrome (762222222267).

The spelling of 420121101243 in words is "four hundred twenty billion, one hundred twenty-one million, one hundred one thousand, two hundred forty-three".