126505144 has 8 divisors (see below), whose sum is σ = 237197160. Its totient is φ = 63252568.

The previous prime is 126505139. The next prime is 126505147. The reversal of 126505144 is 441505621.

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126505147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7906564 + ... + 7906579.

It is an arithmetic number, because the mean of its divisors is an integer number (29649645).

Almost surely, 2^126505144 is an apocalyptic number.

It is an amenable number.

126505144 is a deficient number, since it is larger than the sum of its proper divisors (110692016).

126505144 is a wasteful number, since it uses less digits than its factorization.

126505144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15813149 (or 15813145 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 126505144 is about 11247.4505555704. The cubic root of 126505144 is about 501.9988571584.

The spelling of 126505144 in words is "one hundred twenty-six million, five hundred five thousand, one hundred forty-four".