126128497 has 16 divisors (see below), whose sum is σ = 140387904. Its totient is φ = 112360000.

The previous prime is 126128473. The next prime is 126128501. The reversal of 126128497 is 794821621.

It is a cyclic number.

It is not a de Polignac number, because 126128497 - 2¹¹ = 126126449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126128437) 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, 118347 + ... + 119407.

It is an arithmetic number, because the mean of its divisors is an integer number (8774244).

Almost surely, 2^126128497 is an apocalyptic number.

It is an amenable number.

126128497 is a deficient number, since it is larger than the sum of its proper divisors (14259407).

126128497 is a wasteful number, since it uses less digits than its factorization.

126128497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1280.

The product of its digits is 48384, while the sum is 40.

The square root of 126128497 is about 11230.6944130806. The cubic root of 126128497 is about 501.5001572219.

The spelling of 126128497 in words is "one hundred twenty-six million, one hundred twenty-eight thousand, four hundred ninety-seven".