126749 has 8 divisors (see below), whose sum is σ = 152640. Its totient is φ = 102816.

The previous prime is 126743. The next prime is 126751. The reversal of 126749 is 947621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 126749 - 2⁴ = 126733 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126743) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 344 + ... + 609.

It is an arithmetic number, because the mean of its divisors is an integer number (19080).

2¹²⁶⁷⁴⁹ is an apocalyptic number.

126749 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

126749 is a deficient number, since it is larger than the sum of its proper divisors (25891).

126749 is an equidigital number, since it uses as much as digits as its factorization.

126749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 979.

The product of its digits is 3024, while the sum is 29.

The square root of 126749 is about 356.0182579588. The cubic root of 126749 is about 50.2321207318.

The spelling of 126749 in words is "one hundred twenty-six thousand, seven hundred forty-nine".