126805500 has 240 divisors, whose sum is σ = 431278848. Its totient is φ = 32400000.

The previous prime is 126805493. The next prime is 126805517. The reversal of 126805500 is 5508621.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1255450 + ... + 1255550.

Almost surely, 2^126805500 is an apocalyptic number.

126805500 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 126805500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (215639424).

126805500 is an abundant number, since it is smaller than the sum of its proper divisors (304473348).

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

126805500 is a wasteful number, since it uses less digits than its factorization.

126805500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163 (or 142 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 126805500 is about 11260.7948209707. The cubic root of 126805500 is about 502.3958349469.

The spelling of 126805500 in words is "one hundred twenty-six million, eight hundred five thousand, five hundred".