126744487 has 4 divisors (see below), whose sum is σ = 127975120. Its totient is φ = 125513856.

The previous prime is 126744479. The next prime is 126744491. The reversal of 126744487 is 784447621.

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 126744487 - 2³ = 126744479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126744427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 615162 + ... + 615367.

It is an arithmetic number, because the mean of its divisors is an integer number (31993780).

Almost surely, 2^126744487 is an apocalyptic number.

126744487 is a deficient number, since it is larger than the sum of its proper divisors (1230633).

126744487 is a wasteful number, since it uses less digits than its factorization.

126744487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1230632.

The product of its digits is 301056, while the sum is 43.

The square root of 126744487 is about 11258.0854056096. The cubic root of 126744487 is about 502.3152453968.

It can be divided in two parts, 12674 and 4487, that added together give a square (17161 = 131²).

The spelling of 126744487 in words is "one hundred twenty-six million, seven hundred forty-four thousand, four hundred eighty-seven".