126031212 has 72 divisors (see below), whose sum is σ = 329915040. Its totient is φ = 40538880.

The previous prime is 126031201. The next prime is 126031231. The reversal of 126031212 is 212130621.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 151614 + ... + 152442.

Almost surely, 2^126031212 is an apocalyptic number.

126031212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 126031212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164957520).

126031212 is an abundant number, since it is smaller than the sum of its proper divisors (203883828).

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

126031212 is a wasteful number, since it uses less digits than its factorization.

126031212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 983 (or 978 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 126031212 is about 11226.3623672141. The cubic root of 126031212 is about 501.3711855961.

Adding to 126031212 its reverse (212130621), we get a palindrome (338161833).

The spelling of 126031212 in words is "one hundred twenty-six million, thirty-one thousand, two hundred twelve".