126321000 has 256 divisors, whose sum is σ = 440294400. Its totient is φ = 29952000.

The previous prime is 126320969. The next prime is 126321011. The reversal of 126321000 is 123621.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1598961 + ... + 1599039.

It is an arithmetic number, because the mean of its divisors is an integer number (1719900).

Almost surely, 2^126321000 is an apocalyptic number.

126321000 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 126321000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (220147200).

126321000 is an abundant number, since it is smaller than the sum of its proper divisors (313973400).

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

126321000 is a wasteful number, since it uses less digits than its factorization.

126321000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157 (or 143 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 126321000 is about 11239.2615415783. The cubic root of 126321000 is about 501.7551649163.

Adding to 126321000 its reverse (123621), we get a palindrome (126444621).

The spelling of 126321000 in words is "one hundred twenty-six million, three hundred twenty-one thousand".