121094145 has 24 divisors (see below), whose sum is σ = 222244776. Its totient is φ = 60784128.

The previous prime is 121094143. The next prime is 121094161. The reversal of 121094145 is 541490121.

It can be written as a sum of positive squares in 4 ways, for example, as 50936769 + 70157376 = 7137^2 + 8376^2 .

It is not a de Polignac number, because 121094145 - 2¹ = 121094143 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (121094143) 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 23 ways as a sum of consecutive naturals, for example, 78382 + ... + 79911.

It is an arithmetic number, because the mean of its divisors is an integer number (9260199).

It is a Proth number, since it is equal to 7391 ⋅ 2¹⁴ + 1 and 7391 < 2¹⁴.

Almost surely, 2^121094145 is an apocalyptic number.

121094145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121094145 is a deficient number, since it is larger than the sum of its proper divisors (101150631).

121094145 is a wasteful number, since it uses less digits than its factorization.

121094145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158321 (or 158318 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 121094145 is about 11004.2784861162. The cubic root of 121094145 is about 494.7369891423.

The spelling of 121094145 in words is "one hundred twenty-one million, ninety-four thousand, one hundred forty-five".