126016243 has 4 divisors (see below), whose sum is σ = 126124128. Its totient is φ = 125908360.

The previous prime is 126016199. The next prime is 126016283. The reversal of 126016243 is 342610621.

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

It is a cyclic number.

It is not a de Polignac number, because 126016243 - 2⁹ = 126015731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126016283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52171 + ... + 54532.

It is an arithmetic number, because the mean of its divisors is an integer number (31531032).

Almost surely, 2^126016243 is an apocalyptic number.

126016243 is a deficient number, since it is larger than the sum of its proper divisors (107885).

126016243 is a wasteful number, since it uses less digits than its factorization.

126016243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107884.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 126016243 is about 11225.6956577310. The cubic root of 126016243 is about 501.3513351630.

Adding to 126016243 its reverse (342610621), we get a palindrome (468626864).

The spelling of 126016243 in words is "one hundred twenty-six million, sixteen thousand, two hundred forty-three".