126303840 has 288 divisors, whose sum is σ = 481451040. Its totient is φ = 30910464.

The previous prime is 126303809. The next prime is 126303841. The reversal of 126303840 is 48303621.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (288).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126303841) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 729994 + ... + 730166.

It is an arithmetic number, because the mean of its divisors is an integer number (1671705).

Almost surely, 2^126303840 is an apocalyptic number.

126303840 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 126303840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (240725520).

126303840 is an abundant number, since it is smaller than the sum of its proper divisors (355147200).

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

126303840 is a wasteful number, since it uses less digits than its factorization.

126303840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223 (or 196 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 126303840 is about 11238.4981203006. The cubic root of 126303840 is about 501.7324436782.

The spelling of 126303840 in words is "one hundred twenty-six million, three hundred three thousand, eight hundred forty".