121527750 has 64 divisors (see below), whose sum is σ = 313178112. Its totient is φ = 31356000.

The previous prime is 121527739. The next prime is 121527751. The reversal of 121527750 is 57725121.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121527751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20637 + ... + 25863.

It is an arithmetic number, because the mean of its divisors is an integer number (4893408).

Almost surely, 2^121527750 is an apocalyptic number.

121527750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 121527750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156589056).

121527750 is an abundant number, since it is smaller than the sum of its proper divisors (191650362).

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

121527750 is a wasteful number, since it uses less digits than its factorization.

121527750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5278 (or 5268 counting only the distinct ones).

The product of its (nonzero) digits is 4900, while the sum is 30.

The square root of 121527750 is about 11023.9625362208. The cubic root of 121527750 is about 495.3267916577.

The spelling of 121527750 in words is "one hundred twenty-one million, five hundred twenty-seven thousand, seven hundred fifty".