126977745 has 8 divisors (see below), whose sum is σ = 203164416. Its totient is φ = 67721456.

The previous prime is 126977713. The next prime is 126977801. The reversal of 126977745 is 547779621.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 126977745 - 2⁵ = 126977713 is a prime.

It is a super-2 number, since 2×126977745² = 32246695450570050, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 126977694 and 126977703.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4232577 + ... + 4232606.

It is an arithmetic number, because the mean of its divisors is an integer number (25395552).

Almost surely, 2^126977745 is an apocalyptic number.

126977745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

126977745 is a deficient number, since it is larger than the sum of its proper divisors (76186671).

126977745 is an equidigital number, since it uses as much as digits as its factorization.

126977745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8465191.

The product of its digits is 740880, while the sum is 48.

The square root of 126977745 is about 11268.4402203677. The cubic root of 126977745 is about 502.6232068373.

The spelling of 126977745 in words is "one hundred twenty-six million, nine hundred seventy-seven thousand, seven hundred forty-five".