121945135 has 32 divisors (see below), whose sum is σ = 166944960. Its totient is φ = 84768768.

The previous prime is 121945123. The next prime is 121945139. The reversal of 121945135 is 531549121.

It is a cyclic number.

It is not a de Polignac number, because 121945135 - 2¹³ = 121936943 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121945097 and 121945106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121945139) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 361687 + ... + 362023.

It is an arithmetic number, because the mean of its divisors is an integer number (5217030).

Almost surely, 2^121945135 is an apocalyptic number.

121945135 is a deficient number, since it is larger than the sum of its proper divisors (44999825).

121945135 is a wasteful number, since it uses less digits than its factorization.

121945135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667.

The product of its digits is 5400, while the sum is 31.

The square root of 121945135 is about 11042.8771160418. The cubic root of 121945135 is about 495.8932075300.

The spelling of 121945135 in words is "one hundred twenty-one million, nine hundred forty-five thousand, one hundred thirty-five".