121458961 has 24 divisors (see below), whose sum is σ = 139082496. Its totient is φ = 105325920.

The previous prime is 121458959. The next prime is 121458979. The reversal of 121458961 is 169854121.

It is not a de Polignac number, because 121458961 - 2¹ = 121458959 is a prime.

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

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121458961.

It is not an unprimeable number, because it can be changed into a prime (121458941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 745066 + ... + 745228.

It is an arithmetic number, because the mean of its divisors is an integer number (5795104).

Almost surely, 2^121458961 is an apocalyptic number.

It is an amenable number.

121458961 is a deficient number, since it is larger than the sum of its proper divisors (17623535).

121458961 is a wasteful number, since it uses less digits than its factorization.

121458961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293 (or 250 counting only the distinct ones).

The product of its digits is 17280, while the sum is 37.

The square root of 121458961 is about 11020.8421184590. The cubic root of 121458961 is about 495.2333165309.

The spelling of 121458961 in words is "one hundred twenty-one million, four hundred fifty-eight thousand, nine hundred sixty-one".