126132243 has 4 divisors (see below), whose sum is σ = 168176328. Its totient is φ = 84088160.

The previous prime is 126132233. The next prime is 126132283. The reversal of 126132243 is 342231621.

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 126132243 - 2⁶ = 126132179 is a prime.

It is a super-2 number, since 2×126132243² = 31818685448422098, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (126132233) 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, 21022038 + ... + 21022043.

It is an arithmetic number, because the mean of its divisors is an integer number (42044082).

Almost surely, 2^126132243 is an apocalyptic number.

126132243 is a deficient number, since it is larger than the sum of its proper divisors (42044085).

126132243 is an equidigital number, since it uses as much as digits as its factorization.

126132243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42044084.

The product of its digits is 1728, while the sum is 24.

The square root of 126132243 is about 11230.8611869260. The cubic root of 126132243 is about 501.5051220026.

Adding to 126132243 its reverse (342231621), we get a palindrome (468363864).

The spelling of 126132243 in words is "one hundred twenty-six million, one hundred thirty-two thousand, two hundred forty-three".