121730562 has 24 divisors (see below), whose sum is σ = 263996460. Its totient is φ = 40538880.

The previous prime is 121730537. The next prime is 121730569. The reversal of 121730562 is 265037121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 108180801 + 13549761 = 10401^2 + 3681^2 .

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (121730569) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 22014 + ... + 26982.

Almost surely, 2^121730562 is an apocalyptic number.

121730562 is an abundant number, since it is smaller than the sum of its proper divisors (142265898).

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

121730562 is a wasteful number, since it uses less digits than its factorization.

121730562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6338 (or 6335 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 121730562 is about 11033.1573903394. The cubic root of 121730562 is about 495.6021811214.

Adding to 121730562 its reverse (265037121), we get a palindrome (386767683).

The spelling of 121730562 in words is "one hundred twenty-one million, seven hundred thirty thousand, five hundred sixty-two".