2154245234 has 4 divisors (see below), whose sum is σ = 3231367854. Its totient is φ = 1077122616.

The previous prime is 2154245207. The next prime is 2154245239. The reversal of 2154245234 is 4325424512.

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

It can be written as a sum of positive squares in only one way, i.e., 1387786009 + 766459225 = 37253^2 + 27685^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2154245234.

It is not an unprimeable number, because it can be changed into a prime (2154245239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 538561307 + ... + 538561310.

Almost surely, 2^2154245234 is an apocalyptic number.

2154245234 is a deficient number, since it is larger than the sum of its proper divisors (1077122620).

2154245234 is a wasteful number, since it uses less digits than its factorization.

2154245234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1077122619.

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

The square root of 2154245234 is about 46413.8474380222. The cubic root of 2154245234 is about 1291.5118052693.

Adding to 2154245234 its reverse (4325424512), we get a palindrome (6479669746).

The spelling of 2154245234 in words is "two billion, one hundred fifty-four million, two hundred forty-five thousand, two hundred thirty-four".