2143515120 has 40 divisors (see below), whose sum is σ = 6644897616. Its totient is φ = 571603968.

The previous prime is 2143515109. The next prime is 2143515131. The reversal of 2143515120 is 215153412.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2143515109) and next prime (2143515131).

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×2143515120² = 9189314139337228800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4465417 + ... + 4465896.

Almost surely, 2^2143515120 is an apocalyptic number.

2143515120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2143515120 is an abundant number, since it is smaller than the sum of its proper divisors (4501382496).

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

2143515120 is a wasteful number, since it uses less digits than its factorization.

2143515120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8931329 (or 8931323 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 2143515120 is about 46298.1114085661. Note that the first 3 decimals coincide. The cubic root of 2143515120 is about 1289.3639313583.

Adding to 2143515120 its reverse (215153412), we get a palindrome (2358668532).

The spelling of 2143515120 in words is "two billion, one hundred forty-three million, five hundred fifteen thousand, one hundred twenty".