126452809 has 16 divisors (see below), whose sum is σ = 155668480. Its totient is φ = 100290960.

The previous prime is 126452803. The next prime is 126452849. The reversal of 126452809 is 908254621.

It is not a de Polignac number, because 126452809 - 2¹¹ = 126450761 is a prime.

It is a super-3 number, since 3×126452809³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126452803) 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 15 ways as a sum of consecutive naturals, for example, 5337 + ... + 16774.

It is an arithmetic number, because the mean of its divisors is an integer number (9729280).

Almost surely, 2^126452809 is an apocalyptic number.

126452809 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

126452809 is a deficient number, since it is larger than the sum of its proper divisors (29215671).

126452809 is a wasteful number, since it uses less digits than its factorization.

126452809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22180.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 126452809 is about 11245.1237876690. The cubic root of 126452809 is about 501.9296222032.

The spelling of 126452809 in words is "one hundred twenty-six million, four hundred fifty-two thousand, eight hundred nine".