137805241 has 4 divisors (see below), whose sum is σ = 157491712. Its totient is φ = 118118772.

The previous prime is 137805229. The next prime is 137805251. The reversal of 137805241 is 142508731.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 137805241 - 2⁷ = 137805113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (137805211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9843225 + ... + 9843238.

It is an arithmetic number, because the mean of its divisors is an integer number (39372928).

Almost surely, 2^137805241 is an apocalyptic number.

It is an amenable number.

137805241 is a deficient number, since it is larger than the sum of its proper divisors (19686471).

137805241 is an equidigital number, since it uses as much as digits as its factorization.

137805241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19686470.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 137805241 is about 11739.0477041368. The cubic root of 137805241 is about 516.5217078361.

The spelling of 137805241 in words is "one hundred thirty-seven million, eight hundred five thousand, two hundred forty-one".