2120090040 has 48 divisors (see below), whose sum is σ = 6890293800. Its totient is φ = 565357248.

The previous prime is 2120090039. The next prime is 2120090051. The reversal of 2120090040 is 400900212.

2120090040 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2120089995 and 2120090022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2944210 + ... + 2944929.

Almost surely, 2^2120090040 is an apocalyptic number.

2120090040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2120090040 is an abundant number, since it is smaller than the sum of its proper divisors (4770203760).

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

2120090040 is a wasteful number, since it uses less digits than its factorization.

2120090040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5889156 (or 5889149 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 2120090040 is about 46044.4354944221. The cubic root of 2120090040 is about 1284.6498442843.

Adding to 2120090040 its reverse (400900212), we get a palindrome (2520990252).

The spelling of 2120090040 in words is "two billion, one hundred twenty million, ninety thousand, forty".