2134121523 has 4 divisors (see below), whose sum is σ = 2845495368. Its totient is φ = 1422747680.

The previous prime is 2134121489. The next prime is 2134121533. The reversal of 2134121523 is 3251214312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2134121523 - 2⁶ = 2134121459 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2134121493 and 2134121502.

It is not an unprimeable number, because it can be changed into a prime (2134121533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 355686918 + ... + 355686923.

It is an arithmetic number, because the mean of its divisors is an integer number (711373842).

Almost surely, 2^2134121523 is an apocalyptic number.

2134121523 is a deficient number, since it is larger than the sum of its proper divisors (711373845).

2134121523 is an equidigital number, since it uses as much as digits as its factorization.

2134121523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 711373844.

The product of its digits is 1440, while the sum is 24.

The square root of 2134121523 is about 46196.5531506410. The cubic root of 2134121523 is about 1287.4776992775.

Adding to 2134121523 its reverse (3251214312), we get a palindrome (5385335835).

The spelling of 2134121523 in words is "two billion, one hundred thirty-four million, one hundred twenty-one thousand, five hundred twenty-three".