121513450 has 48 divisors (see below), whose sum is σ = 243466560. Its totient is φ = 44952320.

The previous prime is 121513429. The next prime is 121513489. The reversal of 121513450 is 54315121.

It is a happy number.

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, 48939 + ... + 51361.

It is an arithmetic number, because the mean of its divisors is an integer number (5072220).

Almost surely, 2^121513450 is an apocalyptic number.

121513450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121513450 is an abundant number, since it is smaller than the sum of its proper divisors (121953110).

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

121513450 is a wasteful number, since it uses less digits than its factorization.

121513450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2511 (or 2506 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 121513450 is about 11023.3139300303. The cubic root of 121513450 is about 495.3073627592.

Adding to 121513450 its reverse (54315121), we get a palindrome (175828571).

The spelling of 121513450 in words is "one hundred twenty-one million, five hundred thirteen thousand, four hundred fifty".