128126450 has 48 divisors (see below), whose sum is σ = 253671264. Its totient is φ = 47980800.

The previous prime is 128126431. The next prime is 128126477. The reversal of 128126450 is 54621821.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 260705 + ... + 261195.

It is an arithmetic number, because the mean of its divisors is an integer number (5284818).

Almost surely, 2^128126450 is an apocalyptic number.

128126450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128126450 is a deficient number, since it is larger than the sum of its proper divisors (125544814).

128126450 is a wasteful number, since it uses less digits than its factorization.

128126450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 827 (or 822 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 128126450 is about 11319.2954727757. The cubic root of 128126450 is about 504.1343205652.

The spelling of 128126450 in words is "one hundred twenty-eight million, one hundred twenty-six thousand, four hundred fifty".