2140111240 has 32 divisors (see below), whose sum is σ = 4817079000. Its totient is φ = 855719424.

The previous prime is 2140111223. The next prime is 2140111243. The reversal of 2140111240 is 421110412.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1330936324 + 809174916 = 36482^2 + 28446^2 .

It is a super-2 number, since 2×2140111240² = 9160152239148675200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2140111243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115756 + ... + 132964.

Almost surely, 2^2140111240 is an apocalyptic number.

2140111240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2140111240 is an abundant number, since it is smaller than the sum of its proper divisors (2676967760).

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

2140111240 is a wasteful number, since it uses less digits than its factorization.

2140111240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20329 (or 20325 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 2140111240 is about 46261.3363404042. The cubic root of 2140111240 is about 1288.6810708777.

Adding to 2140111240 its reverse (421110412), we get a palindrome (2561221652).

The spelling of 2140111240 in words is "two billion, one hundred forty million, one hundred eleven thousand, two hundred forty".