136943245 has 8 divisors (see below), whose sum is σ = 173998584. Its totient is φ = 103110144.

The previous prime is 136943207. The next prime is 136943263. The reversal of 136943245 is 542349631.

It can be written as a sum of positive squares in 4 ways, for example, as 964324 + 135978921 = 982^2 + 11661^2 .

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 136943245 - 2⁷ = 136943117 is a prime.

It is a super-2 number, since 2×136943245² = 37506904702260050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 805464 + ... + 805633.

It is an arithmetic number, because the mean of its divisors is an integer number (21749823).

Almost surely, 2^136943245 is an apocalyptic number.

It is an amenable number.

136943245 is a deficient number, since it is larger than the sum of its proper divisors (37055339).

136943245 is a wasteful number, since it uses less digits than its factorization.

136943245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1611119.

The product of its digits is 77760, while the sum is 37.

The square root of 136943245 is about 11702.2752061298. The cubic root of 136943245 is about 515.4424764193.

The spelling of 136943245 in words is "one hundred thirty-six million, nine hundred forty-three thousand, two hundred forty-five".