136845121 has 16 divisors (see below), whose sum is σ = 166091904. Its totient is φ = 110064384.

The previous prime is 136845119. The next prime is 136845127. The reversal of 136845121 is 121548631.

It is a cyclic number.

It is not a de Polignac number, because 136845121 - 2¹ = 136845119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (136845127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42846 + ... + 45928.

It is an arithmetic number, because the mean of its divisors is an integer number (10380744).

Almost surely, 2^136845121 is an apocalyptic number.

It is an amenable number.

136845121 is a deficient number, since it is larger than the sum of its proper divisors (29246783).

136845121 is a wasteful number, since it uses less digits than its factorization.

136845121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3480.

The product of its digits is 5760, while the sum is 31.

The square root of 136845121 is about 11698.0819367963. The cubic root of 136845121 is about 515.3193369333.

The spelling of 136845121 in words is "one hundred thirty-six million, eight hundred forty-five thousand, one hundred twenty-one".