126303380 has 54 divisors (see below), whose sum is σ = 309402954. Its totient is φ = 43183392.

The previous prime is 126303379. The next prime is 126303389. The reversal of 126303380 is 83303621.

It can be written as a sum of positive squares in only one way, i.e., 101042704 + 25260676 = 10052^2 + 5026^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126303389) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 351641 + ... + 351999.

Almost surely, 2^126303380 is an apocalyptic number.

126303380 is a gapful number since it is divisible by the number (10) 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 126303380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154701477).

126303380 is an abundant number, since it is smaller than the sum of its proper divisors (183099574).

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

126303380 is an equidigital number, since it uses as much as digits as its factorization.

126303380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741 (or 373 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 126303380 is about 11238.4776549139. The cubic root of 126303380 is about 501.7318345724.

The spelling of 126303380 in words is "one hundred twenty-six million, three hundred three thousand, three hundred eighty".