121436530 has 16 divisors (see below), whose sum is σ = 218715840. Its totient is φ = 48545712.

The previous prime is 121436521. The next prime is 121436533. The reversal of 121436530 is 35634121.

It is a junction number, because it is equal to n+sod(n) for n = 121436495 and 121436504.

It is not an unprimeable number, because it can be changed into a prime (121436533) 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 7 ways as a sum of consecutive naturals, for example, 24307 + ... + 28873.

It is an arithmetic number, because the mean of its divisors is an integer number (13669740).

Almost surely, 2^121436530 is an apocalyptic number.

121436530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121436530 is a deficient number, since it is larger than the sum of its proper divisors (97279310).

121436530 is a wasteful number, since it uses less digits than its factorization.

121436530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7233.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 121436530 is about 11019.8244087644. The cubic root of 121436530 is about 495.2028281466.

The spelling of 121436530 in words is "one hundred twenty-one million, four hundred thirty-six thousand, five hundred thirty".