126973547 has 4 divisors (see below), whose sum is σ = 132494160. Its totient is φ = 121452936.

The previous prime is 126973537. The next prime is 126973549. The reversal of 126973547 is 745379621.

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

It is a cyclic number.

It is not a de Polignac number, because 126973547 - 2¹⁰ = 126972523 is a prime.

It is a super-2 number, since 2×126973547² = 32244563275522418, 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 = 126973498 and 126973507.

It is not an unprimeable number, because it can be changed into a prime (126973549) 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, 2760272 + ... + 2760317.

It is an arithmetic number, because the mean of its divisors is an integer number (33123540).

Almost surely, 2^126973547 is an apocalyptic number.

126973547 is a deficient number, since it is larger than the sum of its proper divisors (5520613).

126973547 is an equidigital number, since it uses as much as digits as its factorization.

126973547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5520612.

The product of its digits is 317520, while the sum is 44.

The square root of 126973547 is about 11268.2539463752. The cubic root of 126973547 is about 502.6176677158.

The spelling of 126973547 in words is "one hundred twenty-six million, nine hundred seventy-three thousand, five hundred forty-seven".