121700450 has 24 divisors (see below), whose sum is σ = 239679972. Its totient is φ = 45816320.

The previous prime is 121700419. The next prime is 121700507. The reversal of 121700450 is 54007121.

It can be written as a sum of positive squares in 6 ways, for example, as 54804409 + 66896041 = 7403^2 + 8179^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 70739 + ... + 72438.

Almost surely, 2^121700450 is an apocalyptic number.

121700450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121700450 is a deficient number, since it is larger than the sum of its proper divisors (117979522).

121700450 is a wasteful number, since it uses less digits than its factorization.

121700450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143206 (or 143201 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 121700450 is about 11031.7926920333. The cubic root of 121700450 is about 495.5613127113.

Adding to 121700450 its reverse (54007121), we get a palindrome (175707571).

The spelling of 121700450 in words is "one hundred twenty-one million, seven hundred thousand, four hundred fifty".