126775679 has 4 divisors (see below), whose sum is σ = 127227120. Its totient is φ = 126324240.

The previous prime is 126775651. The next prime is 126775687. The reversal of 126775679 is 976577621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 976577621 = 131 ⋅7454791.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126775679 is a prime.

It is a super-2 number, since 2×126775679² = 32144145571822082, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126705679) 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, 225299 + ... + 225860.

It is an arithmetic number, because the mean of its divisors is an integer number (31806780).

Almost surely, 2^126775679 is an apocalyptic number.

126775679 is a deficient number, since it is larger than the sum of its proper divisors (451441).

126775679 is an equidigital number, since it uses as much as digits as its factorization.

126775679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451440.

The product of its digits is 1111320, while the sum is 50.

The square root of 126775679 is about 11259.4706358692. The cubic root of 126775679 is about 502.3564488509.

The spelling of 126775679 in words is "one hundred twenty-six million, seven hundred seventy-five thousand, six hundred seventy-nine".