126507 has 4 divisors (see below), whose sum is σ = 168680. Its totient is φ = 84336.

The previous prime is 126499. The next prime is 126517. The reversal of 126507 is 705621.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 126507 - 2³ = 126499 is a prime.

It is a D-number.

It is a Duffinian number.

126507 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 126507.

It is not an unprimeable number, because it can be changed into a prime (126517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21082 + ... + 21087.

It is an arithmetic number, because the mean of its divisors is an integer number (42170).

2¹²⁶⁵⁰⁷ is an apocalyptic number.

126507 is a deficient number, since it is larger than the sum of its proper divisors (42173).

126507 is an equidigital number, since it uses as much as digits as its factorization.

126507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42172.

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 126507 is about 355.6782253667. The cubic root of 126507 is about 50.2001312145.

The spelling of 126507 in words is "one hundred twenty-six thousand, five hundred seven".