126977947 has 8 divisors (see below), whose sum is σ = 135835056. Its totient is φ = 118275072.

The previous prime is 126977933. The next prime is 126977951. The reversal of 126977947 is 749779621.

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 126977947 - 2⁷ = 126977819 is a prime.

It is a super-2 number, since 2×126977947² = 32246798048669618, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 126977894 and 126977903.

It is not an unprimeable number, because it can be changed into a prime (126977927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36853 + ... + 40150.

It is an arithmetic number, because the mean of its divisors is an integer number (16979382).

Almost surely, 2^126977947 is an apocalyptic number.

126977947 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

126977947 is a deficient number, since it is larger than the sum of its proper divisors (8857109).

126977947 is an equidigital number, since it uses as much as digits as its factorization.

126977947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77117.

The product of its digits is 1333584, while the sum is 52.

The square root of 126977947 is about 11268.4491834502. The cubic root of 126977947 is about 502.6234733665.

The spelling of 126977947 in words is "one hundred twenty-six million, nine hundred seventy-seven thousand, nine hundred forty-seven".