216145126 has 4 divisors (see below), whose sum is σ = 324217692. Its totient is φ = 108072562.

The previous prime is 216145117. The next prime is 216145129. The reversal of 216145126 is 621541612.

216145126 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 216145094 and 216145103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216145129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54036280 + ... + 54036283.

It is an arithmetic number, because the mean of its divisors is an integer number (81054423).

Almost surely, 2^216145126 is an apocalyptic number.

216145126 is a deficient number, since it is larger than the sum of its proper divisors (108072566).

216145126 is a wasteful number, since it uses less digits than its factorization.

216145126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108072565.

The product of its digits is 2880, while the sum is 28.

The square root of 216145126 is about 14701.8749144454. The cubic root of 216145126 is about 600.1343458423.

Adding to 216145126 its reverse (621541612), we get a palindrome (837686738).

The spelling of 216145126 in words is "two hundred sixteen million, one hundred forty-five thousand, one hundred twenty-six".