126012243 has 16 divisors (see below), whose sum is σ = 192741120. Its totient is φ = 71736096.

The previous prime is 126012233. The next prime is 126012247. The reversal of 126012243 is 342210621.

It is not a de Polignac number, because 126012243 - 2⁸ = 126011987 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (126012247) 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, 5505 + ... + 16802.

It is an arithmetic number, because the mean of its divisors is an integer number (12046320).

Almost surely, 2^126012243 is an apocalyptic number.

126012243 is a deficient number, since it is larger than the sum of its proper divisors (66728877).

126012243 is a wasteful number, since it uses less digits than its factorization.

126012243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22586.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 126012243 is about 11225.5174936392. The cubic root of 126012243 is about 501.3460304856.

Adding to 126012243 its reverse (342210621), we get a palindrome (468222864).

The spelling of 126012243 in words is "one hundred twenty-six million, twelve thousand, two hundred forty-three".