147521140 has 24 divisors (see below), whose sum is σ = 333625320. Its totient is φ = 54469248.

The previous prime is 147521137. The next prime is 147521141. The reversal of 147521140 is 41125741.

It can be written as a sum of positive squares in 4 ways, for example, as 190096 + 147331044 = 436^2 + 12138^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (147521141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 283435 + ... + 283954.

It is an arithmetic number, because the mean of its divisors is an integer number (13901055).

Almost surely, 2^147521140 is an apocalyptic number.

147521140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

147521140 is an abundant number, since it is smaller than the sum of its proper divisors (186104180).

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

147521140 is a wasteful number, since it uses less digits than its factorization.

147521140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567411 (or 567409 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 147521140 is about 12145.8280903362. The cubic root of 147521140 is about 528.3861433433.

Adding to 147521140 its reverse (41125741), we get a palindrome (188646881).

The spelling of 147521140 in words is "one hundred forty-seven million, five hundred twenty-one thousand, one hundred forty".