121432450 has 12 divisors (see below), whose sum is σ = 225864450. Its totient is φ = 48572960.

The previous prime is 121432393. The next prime is 121432453. The reversal of 121432450 is 54234121.

It can be written as a sum of positive squares in 3 ways, for example, as 60233121 + 61199329 = 7761^2 + 7823^2 .

It is not an unprimeable number, because it can be changed into a prime (121432453) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1214275 + ... + 1214374.

Almost surely, 2^121432450 is an apocalyptic number.

121432450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121432450 is a deficient number, since it is larger than the sum of its proper divisors (104432000).

121432450 is a wasteful number, since it uses less digits than its factorization.

121432450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2428661 (or 2428656 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 121432450 is about 11019.6392862925. The cubic root of 121432450 is about 495.1972821763.

Adding to 121432450 its reverse (54234121), we get a palindrome (175666571).

The spelling of 121432450 in words is "one hundred twenty-one million, four hundred thirty-two thousand, four hundred fifty".