126943969 has 4 divisors (see below), whose sum is σ = 132463296. Its totient is φ = 121424644.

The previous prime is 126943967. The next prime is 126943979. The reversal of 126943969 is 969349621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 126943969 - 2¹ = 126943967 is a prime.

It is a super-2 number, since 2×126943969² = 32229542530945922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126943961) 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, 2759629 + ... + 2759674.

It is an arithmetic number, because the mean of its divisors is an integer number (33115824).

Almost surely, 2^126943969 is an apocalyptic number.

It is an amenable number.

126943969 is a deficient number, since it is larger than the sum of its proper divisors (5519327).

126943969 is an equidigital number, since it uses as much as digits as its factorization.

126943969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5519326.

The product of its digits is 629856, while the sum is 49.

The square root of 126943969 is about 11266.9414216991. The cubic root of 126943969 is about 502.5786370667.

The spelling of 126943969 in words is "one hundred twenty-six million, nine hundred forty-three thousand, nine hundred sixty-nine".