121447530 has 48 divisors (see below), whose sum is σ = 322493184. Its totient is φ = 31695840.

The previous prime is 121447519. The next prime is 121447583. The reversal of 121447530 is 35744121.

121447530 is a `hidden beast` number, since 121 + 4 + 4 + 7 + 530 = 666.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 121447494 and 121447503.

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, 10126 + ... + 18585.

It is an arithmetic number, because the mean of its divisors is an integer number (6718608).

Almost surely, 2^121447530 is an apocalyptic number.

121447530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121447530 is an abundant number, since it is smaller than the sum of its proper divisors (201045654).

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

121447530 is a wasteful number, since it uses less digits than its factorization.

121447530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28771 (or 28768 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 121447530 is about 11020.3234979741. The cubic root of 121447530 is about 495.2177798986.

The spelling of 121447530 in words is "one hundred twenty-one million, four hundred forty-seven thousand, five hundred thirty".