2112702140 has 24 divisors (see below), whose sum is σ = 4454361072. Its totient is φ = 841712000.

The previous prime is 2112702139. The next prime is 2112702157. The reversal of 2112702140 is 412072112.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 205409 + ... + 215448.

It is an arithmetic number, because the mean of its divisors is an integer number (185598378).

Almost surely, 2^2112702140 is an apocalyptic number.

2112702140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2112702140 is an abundant number, since it is smaller than the sum of its proper divisors (2341658932).

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

2112702140 is a wasteful number, since it uses less digits than its factorization.

2112702140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421117 (or 421115 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 2112702140 is about 45964.1397178279. The cubic root of 2112702140 is about 1283.1558966842.

Adding to 2112702140 its reverse (412072112), we get a palindrome (2524774252).

The spelling of 2112702140 in words is "two billion, one hundred twelve million, seven hundred two thousand, one hundred forty".