121502450 has 24 divisors (see below), whose sum is σ = 232106052. Its totient is φ = 47286720.

The previous prime is 121502443. The next prime is 121502453. The reversal of 121502450 is 54205121.

It can be written as a sum of positive squares in 6 ways, for example, as 48177481 + 73324969 = 6941^2 + 8563^2 .

It is not an unprimeable number, because it can be changed into a prime (121502453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30989 + ... + 34688.

Almost surely, 2^121502450 is an apocalyptic number.

121502450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121502450 is a deficient number, since it is larger than the sum of its proper divisors (110603602).

121502450 is a wasteful number, since it uses less digits than its factorization.

121502450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65726 (or 65721 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 121502450 is about 11022.8149762209. The cubic root of 121502450 is about 495.2924164154.

Adding to 121502450 its reverse (54205121), we get a palindrome (175707571).

The spelling of 121502450 in words is "one hundred twenty-one million, five hundred two thousand, four hundred fifty".