4242020123 has 16 divisors (see below), whose sum is σ = 4908435840. Its totient is φ = 3625502400.

The previous prime is 4242020011. The next prime is 4242020131. The reversal of 4242020123 is 3210202424.

It is a cyclic number.

It is not a de Polignac number, because 4242020123 - 2¹⁸ = 4241757979 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4242020095 and 4242020104.

It is not an unprimeable number, because it can be changed into a prime (4242026123) 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, 50090 + ... + 104847.

It is an arithmetic number, because the mean of its divisors is an integer number (306777240).

Almost surely, 2^4242020123 is an apocalyptic number.

4242020123 is a deficient number, since it is larger than the sum of its proper divisors (666415717).

4242020123 is a wasteful number, since it uses less digits than its factorization.

4242020123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155098.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 4242020123 is about 65130.7924333798. The cubic root of 4242020123 is about 1618.7914731691.

Adding to 4242020123 its reverse (3210202424), we get a palindrome (7452222547).

The spelling of 4242020123 in words is "four billion, two hundred forty-two million, twenty thousand, one hundred twenty-three".