126791451 has 24 divisors (see below), whose sum is σ = 190051680. Its totient is φ = 81357696.

The previous prime is 126791449. The next prime is 126791459. The reversal of 126791451 is 154197621.

It is not a de Polignac number, because 126791451 - 2¹ = 126791449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (126791459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 118746 + ... + 119808.

It is an arithmetic number, because the mean of its divisors is an integer number (7918820).

Almost surely, 2^126791451 is an apocalyptic number.

126791451 is a deficient number, since it is larger than the sum of its proper divisors (63260229).

126791451 is a wasteful number, since it uses less digits than its factorization.

126791451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1555 (or 1552 counting only the distinct ones).

The product of its digits is 15120, while the sum is 36.

The square root of 126791451 is about 11260.1710022539. The cubic root of 126791451 is about 502.3772804947.

The spelling of 126791451 in words is "one hundred twenty-six million, seven hundred ninety-one thousand, four hundred fifty-one".