147129750 has 128 divisors (see below), whose sum is σ = 415134720. Its totient is φ = 38556000.

The previous prime is 147129739. The next prime is 147129761. The reversal of 147129750 is 57921741.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (147129739) and next prime (147129761).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 479097 + ... + 479403.

It is an arithmetic number, because the mean of its divisors is an integer number (3243240).

Almost surely, 2^147129750 is an apocalyptic number.

147129750 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 147129750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (207567360).

147129750 is an abundant number, since it is smaller than the sum of its proper divisors (268004970).

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

147129750 is a wasteful number, since it uses less digits than its factorization.

147129750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404 (or 388 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 36.

The square root of 147129750 is about 12129.7052725942. The cubic root of 147129750 is about 527.9184403981.

The spelling of 147129750 in words is "one hundred forty-seven million, one hundred twenty-nine thousand, seven hundred fifty".