2040400212 has 48 divisors (see below), whose sum is σ = 4970380800. Its totient is φ = 650643840.

The previous prime is 2040400199. The next prime is 2040400217. The reversal of 2040400212 is 2120040402.

It is a junction number, because it is equal to n+sod(n) for n = 2040400191 and 2040400200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2040400217) 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, 11037 + ... + 64827.

It is an arithmetic number, because the mean of its divisors is an integer number (103549600).

Almost surely, 2^2040400212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2040400212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2485190400).

2040400212 is an abundant number, since it is smaller than the sum of its proper divisors (2929980588).

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

2040400212 is a wasteful number, since it uses less digits than its factorization.

2040400212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53936 (or 53934 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 2040400212 is about 45170.7893665807. The cubic root of 2040400212 is about 1268.3480727338.

Adding to 2040400212 its reverse (2120040402), we get a palindrome (4160440614).

The spelling of 2040400212 in words is "two billion, forty million, four hundred thousand, two hundred twelve".