121451 has 8 divisors (see below), whose sum is σ = 135408. Its totient is φ = 108000.

The previous prime is 121447. The next prime is 121453. The reversal of 121451 is 154121.

121451 = 11² + 12² + ... + 71².

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121451 - 2² = 121447 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 121451.

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

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 581 + ... + 761.

It is an arithmetic number, because the mean of its divisors is an integer number (16926).

2¹²¹⁴⁵¹ is an apocalyptic number.

121451 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121451 is a deficient number, since it is larger than the sum of its proper divisors (13957).

121451 is a wasteful number, since it uses less digits than its factorization.

121451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253.

The product of its digits is 40, while the sum is 14.

The square root of 121451 is about 348.4982065951. The cubic root of 121451 is about 49.5222496309.

Adding to 121451 its reverse (154121), we get a palindrome (275572).

The spelling of 121451 in words is "one hundred twenty-one thousand, four hundred fifty-one".