4020124523 has 4 divisors (see below), whose sum is σ = 4023412848. Its totient is φ = 4016836200.

The previous prime is 4020124517. The next prime is 4020124531. The reversal of 4020124523 is 3254210204.

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 4020124523 - 2⁸ = 4020124267 is a prime.

It is a super-2 number, since 2×4020124523² = 32322802360851955058, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4020124543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1642328 + ... + 1644773.

It is an arithmetic number, because the mean of its divisors is an integer number (1005853212).

Almost surely, 2^4020124523 is an apocalyptic number.

4020124523 is a deficient number, since it is larger than the sum of its proper divisors (3288325).

4020124523 is a wasteful number, since it uses less digits than its factorization.

4020124523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3288324.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 4020124523 is about 63404.4519178267. The cubic root of 4020124523 is about 1590.0587406275.

Adding to 4020124523 its reverse (3254210204), we get a palindrome (7274334727).

The spelling of 4020124523 in words is "four billion, twenty million, one hundred twenty-four thousand, five hundred twenty-three".