121450 has 24 divisors (see below), whose sum is σ = 258912. Its totient is φ = 41520.

The previous prime is 121447. The next prime is 121453. The reversal of 121450 is 54121.

121450 = T₆ + T₇ + ... + T₈₉.

It is an interprime number because it is at equal distance from previous prime (121447) and next prime (121453).

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 121450.

It is not an unprimeable number, because it can be changed into a prime (121453) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 177 + ... + 523.

It is an arithmetic number, because the mean of its divisors is an integer number (10788).

2¹²¹⁴⁵⁰ is an apocalyptic number.

121450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121450 is an abundant number, since it is smaller than the sum of its proper divisors (137462).

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

121450 is a wasteful number, since it uses less digits than its factorization.

121450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366 (or 361 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 121450 is about 348.4967718645. The cubic root of 121450 is about 49.5221137122.

Adding to 121450 its reverse (54121), we get a palindrome (175571).

The spelling of 121450 in words is "one hundred twenty-one thousand, four hundred fifty".