2135143252 has 18 divisors (see below), whose sum is σ = 4107063674. Its totient is φ = 970519440.

The previous prime is 2135143247. The next prime is 2135143279. The reversal of 2135143252 is 2523415312.

It can be written as a sum of positive squares in only one way, i.e., 2098006416 + 37136836 = 45804^2 + 6094^2 .

It is a super-2 number, since 2×2135143252² = 9117673413122271008, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2135143252.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2205243 + ... + 2206210.

Almost surely, 2^2135143252 is an apocalyptic number.

2135143252 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2135143252 is a deficient number, since it is larger than the sum of its proper divisors (1971920422).

2135143252 is a wasteful number, since it uses less digits than its factorization.

2135143252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4411479 (or 4411466 counting only the distinct ones).

The product of its digits is 7200, while the sum is 28.

The square root of 2135143252 is about 46207.6103255730. The cubic root of 2135143252 is about 1287.6831301642.

Adding to 2135143252 its reverse (2523415312), we get a palindrome (4658558564).

The spelling of 2135143252 in words is "two billion, one hundred thirty-five million, one hundred forty-three thousand, two hundred fifty-two".