126769291 has 4 divisors (see below), whose sum is σ = 138293784. Its totient is φ = 115244800.

The previous prime is 126769277. The next prime is 126769339. The reversal of 126769291 is 192967621.

It is a happy number.

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

It is not a de Polignac number, because 126769291 - 2⁵ = 126769259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126769211) 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, 5762230 + ... + 5762251.

It is an arithmetic number, because the mean of its divisors is an integer number (34573446).

Almost surely, 2^126769291 is an apocalyptic number.

126769291 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

126769291 is a deficient number, since it is larger than the sum of its proper divisors (11524493).

126769291 is a wasteful number, since it uses less digits than its factorization.

126769291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11524492.

The product of its digits is 81648, while the sum is 43.

The square root of 126769291 is about 11259.1869599896. The cubic root of 126769291 is about 502.3480110945.

The spelling of 126769291 in words is "one hundred twenty-six million, seven hundred sixty-nine thousand, two hundred ninety-one".