2145254234 has 16 divisors (see below), whose sum is σ = 3299584680. Its totient is φ = 1045443840.

The previous prime is 2145254213. The next prime is 2145254249. The reversal of 2145254234 is 4324525412.

It can be written as a sum of positive squares in 4 ways, for example, as 1583801209 + 561453025 = 39797^2 + 23695^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2145254234.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75422 + ... + 99894.

Almost surely, 2^2145254234 is an apocalyptic number.

2145254234 is a deficient number, since it is larger than the sum of its proper divisors (1154330446).

2145254234 is a wasteful number, since it uses less digits than its factorization.

2145254234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25585.

The product of its digits is 38400, while the sum is 32.

The square root of 2145254234 is about 46316.8892953747. The cubic root of 2145254234 is about 1289.7125401585.

Adding to 2145254234 its reverse (4324525412), we get a palindrome (6469779646).

The spelling of 2145254234 in words is "two billion, one hundred forty-five million, two hundred fifty-four thousand, two hundred thirty-four".