126205212 has 48 divisors (see below), whose sum is σ = 356348160. Its totient is φ = 33937152.

The previous prime is 126205207. The next prime is 126205213. The reversal of 126205212 is 212502621.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126205213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42762 + ... + 45617.

It is an arithmetic number, because the mean of its divisors is an integer number (7423920).

Almost surely, 2^126205212 is an apocalyptic number.

126205212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

126205212 is an abundant number, since it is smaller than the sum of its proper divisors (230142948).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

126205212 is a wasteful number, since it uses less digits than its factorization.

126205212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88410 (or 88408 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 126205212 is about 11234.1093104883. The cubic root of 126205212 is about 501.6018122485.

Adding to 126205212 its reverse (212502621), we get a palindrome (338707833).

The spelling of 126205212 in words is "one hundred twenty-six million, two hundred five thousand, two hundred twelve".