126723210 has 64 divisors (see below), whose sum is σ = 313528320. Its totient is φ = 32760320.

The previous prime is 126723173. The next prime is 126723211. The reversal of 126723210 is 12327621.

It is not an unprimeable number, because it can be changed into a prime (126723211) 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 31 ways as a sum of consecutive naturals, for example, 330679 + ... + 331061.

It is an arithmetic number, because the mean of its divisors is an integer number (4898880).

Almost surely, 2^126723210 is an apocalyptic number.

126723210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 126723210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156764160).

126723210 is an abundant number, since it is smaller than the sum of its proper divisors (186805110).

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

126723210 is a wasteful number, since it uses less digits than its factorization.

126723210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 126723210 is about 11257.1404006524. The cubic root of 126723210 is about 502.2871354046.

The spelling of 126723210 in words is "one hundred twenty-six million, seven hundred twenty-three thousand, two hundred ten".