4020021124 has 12 divisors (see below), whose sum is σ = 8040042304. Its totient is φ = 1722866184.

The previous prime is 4020021119. The next prime is 4020021133. The reversal of 4020021124 is 4211200204.

4020021124 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 4020021098 and 4020021107.

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, 71786064 + ... + 71786119.

Almost surely, 2^4020021124 is an apocalyptic number.

It is an amenable number.

4020021124 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4020021124 is a wasteful number, since it uses less digits than its factorization.

4020021124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143572194 (or 143572192 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 4020021124 is about 63403.6365203132. The cubic root of 4020021124 is about 1590.0451082228.

Adding to 4020021124 its reverse (4211200204), we get a palindrome (8231221328).

The spelling of 4020021124 in words is "four billion, twenty million, twenty-one thousand, one hundred twenty-four".