126720481 has 16 divisors (see below), whose sum is σ = 136171840. Its totient is φ = 117573120.

The previous prime is 126720469. The next prime is 126720491. The reversal of 126720481 is 184027621.

It is a cyclic number.

It is not a de Polignac number, because 126720481 - 2¹⁵ = 126687713 is a prime.

It is a super-2 number, since 2×126720481² = 32116160609742722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126720491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 292441 + ... + 292873.

It is an arithmetic number, because the mean of its divisors is an integer number (8510740).

Almost surely, 2^126720481 is an apocalyptic number.

It is an amenable number.

126720481 is a deficient number, since it is larger than the sum of its proper divisors (9451359).

126720481 is a wasteful number, since it uses less digits than its factorization.

126720481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 126720481 is about 11257.0191880444. The cubic root of 126720481 is about 502.2835297736.

The spelling of 126720481 in words is "one hundred twenty-six million, seven hundred twenty thousand, four hundred eighty-one".