4252121115 has 16 divisors (see below), whose sum is σ = 7421884416. Its totient is φ = 2061634400.

The previous prime is 4252121089. The next prime is 4252121117. The reversal of 4252121115 is 5111212524.

It is a happy number.

It is not a de Polignac number, because 4252121115 - 2⁶ = 4252121051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4252121117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12885051 + ... + 12885380.

It is an arithmetic number, because the mean of its divisors is an integer number (463867776).

Almost surely, 2^4252121115 is an apocalyptic number.

4252121115 is a deficient number, since it is larger than the sum of its proper divisors (3169763301).

4252121115 is a wasteful number, since it uses less digits than its factorization.

4252121115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25770450.

The product of its digits is 800, while the sum is 24.

The square root of 4252121115 is about 65208.2902321476. The cubic root of 4252121115 is about 1620.0753299067.

Adding to 4252121115 its reverse (5111212524), we get a palindrome (9363333639).

It can be divided in two parts, 42521 and 21115, that added together give a palindrome (63636).

The spelling of 4252121115 in words is "four billion, two hundred fifty-two million, one hundred twenty-one thousand, one hundred fifteen".