126370243 has 4 divisors (see below), whose sum is σ = 126392728. Its totient is φ = 126347760.

The previous prime is 126370201. The next prime is 126370247. The reversal of 126370243 is 342073621.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 342073621 = 37 ⋅9245233.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126370243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126370247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5455 + ... + 16807.

It is an arithmetic number, because the mean of its divisors is an integer number (31598182).

Almost surely, 2^126370243 is an apocalyptic number.

126370243 is a deficient number, since it is larger than the sum of its proper divisors (22485).

126370243 is a wasteful number, since it uses less digits than its factorization.

126370243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22484.

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 126370243 is about 11241.4519969620. The cubic root of 126370243 is about 501.8203552375.

The spelling of 126370243 in words is "one hundred twenty-six million, three hundred seventy thousand, two hundred forty-three".