126500000 has 168 divisors, whose sum is σ = 354370464. Its totient is φ = 44000000.

The previous prime is 126499991. The next prime is 126500041. The reversal of 126500000 is 5621.

It is a hoax number, since the sum of its digits (14) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 5499989 + ... + 5500011.

It is an arithmetic number, because the mean of its divisors is an integer number (2109348).

Almost surely, 2^126500000 is an apocalyptic number.

126500000 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 126500000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177185232).

126500000 is an abundant number, since it is smaller than the sum of its proper divisors (227870464).

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

126500000 is an frugal number, since it uses more digits than its factorization.

126500000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74 (or 41 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 126500000 is about 11247.2218792020. The cubic root of 126500000 is about 501.9920529104.

Adding to 126500000 its reverse (5621), we get a palindrome (126505621).

The spelling of 126500000 in words is "one hundred twenty-six million, five hundred thousand".