2123420135 has 16 divisors (see below), whose sum is σ = 2627577792. Its totient is φ = 1646304000.

The previous prime is 2123420119. The next prime is 2123420209. The reversal of 2123420135 is 5310243212.

It is not a de Polignac number, because 2123420135 - 2⁴ = 2123420119 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2123420135.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3344 + ... + 65253.

It is an arithmetic number, because the mean of its divisors is an integer number (164223612).

Almost surely, 2^2123420135 is an apocalyptic number.

2123420135 is a deficient number, since it is larger than the sum of its proper divisors (504157657).

2123420135 is a wasteful number, since it uses less digits than its factorization.

2123420135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68794.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 2123420135 is about 46080.5830583772. The cubic root of 2123420135 is about 1285.3221063152.

Adding to 2123420135 its reverse (5310243212), we get a palindrome (7433663347).

The spelling of 2123420135 in words is "two billion, one hundred twenty-three million, four hundred twenty thousand, one hundred thirty-five".