2152342140 has 48 divisors (see below), whose sum is σ = 6490141728. Its totient is φ = 529807104.

The previous prime is 2152342099. The next prime is 2152342141. The reversal of 2152342140 is 412432512.

It is a self number, because there is not a number n which added to its sum of digits gives 2152342140.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2152342141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1378927 + ... + 1380486.

It is an arithmetic number, because the mean of its divisors is an integer number (135211286).

Almost surely, 2^2152342140 is an apocalyptic number.

2152342140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2152342140 is an abundant number, since it is smaller than the sum of its proper divisors (4337799588).

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

2152342140 is a wasteful number, since it uses less digits than its factorization.

2152342140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2759438 (or 2759436 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 2152342140 is about 46393.3415481144. The cubic root of 2152342140 is about 1291.1313792997.

Adding to 2152342140 its reverse (412432512), we get a palindrome (2564774652).

The spelling of 2152342140 in words is "two billion, one hundred fifty-two million, three hundred forty-two thousand, one hundred forty".