2111405040 has 120 divisors (see below), whose sum is σ = 7319614848. Its totient is φ = 544872960.

The previous prime is 2111405033. The next prime is 2111405041. The reversal of 2111405040 is 405041112.

2111405040 is a `hidden beast` number, since 21 + 1 + 140 + 504 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111405041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24979 + ... + 69618.

Almost surely, 2^2111405040 is an apocalyptic number.

2111405040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2111405040 is an abundant number, since it is smaller than the sum of its proper divisors (5208209808).

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

2111405040 is a wasteful number, since it uses less digits than its factorization.

2111405040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94647 (or 94638 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 2111405040 is about 45950.0276387294. The cubic root of 2111405040 is about 1282.8932437502.

Adding to 2111405040 its reverse (405041112), we get a palindrome (2516446152).

The spelling of 2111405040 in words is "two billion, one hundred eleven million, four hundred five thousand, forty".