126212369 has 12 divisors (see below), whose sum is σ = 135983808. Its totient is φ = 117096000.

The previous prime is 126212351. The next prime is 126212399. The reversal of 126212369 is 963212621.

It is a happy number.

It is not a de Polignac number, because 126212369 - 2⁸ = 126212113 is a prime.

It is a super-2 number, since 2×126212369² = 31859124177184322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126212399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17444 + ... + 23594.

It is an arithmetic number, because the mean of its divisors is an integer number (11331984).

Almost surely, 2^126212369 is an apocalyptic number.

It is an amenable number.

126212369 is a deficient number, since it is larger than the sum of its proper divisors (9771439).

126212369 is an equidigital number, since it uses as much as digits as its factorization.

126212369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6256 (or 6239 counting only the distinct ones).

The product of its digits is 7776, while the sum is 32.

The square root of 126212369 is about 11234.4278447992. The cubic root of 126212369 is about 501.6112938862.

It can be divided in two parts, 1262 and 12369, that added together give a palindrome (13631).

The spelling of 126212369 in words is "one hundred twenty-six million, two hundred twelve thousand, three hundred sixty-nine".