126531219 has 8 divisors (see below), whose sum is σ = 170844160. Its totient is φ = 83286216.

The previous prime is 126531217. The next prime is 126531227. The reversal of 126531219 is 912135621.

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

It is not a de Polignac number, because 126531219 - 2¹ = 126531217 is a prime.

It is a super-2 number, since 2×126531219² = 32020298763251922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126531217) 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, 266707 + ... + 267180.

It is an arithmetic number, because the mean of its divisors is an integer number (21355520).

Almost surely, 2^126531219 is an apocalyptic number.

126531219 is a deficient number, since it is larger than the sum of its proper divisors (44312941).

126531219 is an equidigital number, since it uses as much as digits as its factorization.

126531219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533969.

The product of its digits is 3240, while the sum is 30.

The square root of 126531219 is about 11248.6096474187. The cubic root of 126531219 is about 502.0333451393.

The spelling of 126531219 in words is "one hundred twenty-six million, five hundred thirty-one thousand, two hundred nineteen".