4020123112 has 16 divisors (see below), whose sum is σ = 7741453860. Its totient is φ = 1955735424.

The previous prime is 4020123109. The next prime is 4020123137. The reversal of 4020123112 is 2113210204.

It can be written as a sum of positive squares in 2 ways, for example, as 3721732036 + 298391076 = 61006^2 + 17274^2 .

It is a super-2 number, since 2×4020123112² = 32322779671273129088, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6790453 + ... + 6791044.

Almost surely, 2^4020123112 is an apocalyptic number.

It is an amenable number.

4020123112 is a deficient number, since it is larger than the sum of its proper divisors (3721330748).

4020123112 is a wasteful number, since it uses less digits than its factorization.

4020123112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13581540 (or 13581536 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 4020123112 is about 63404.4407908468. The cubic root of 4020123112 is about 1590.0585545990.

Adding to 4020123112 its reverse (2113210204), we get a palindrome (6133333316).

The spelling of 4020123112 in words is "four billion, twenty million, one hundred twenty-three thousand, one hundred twelve".