136420241 has 4 divisors (see below), whose sum is σ = 138456432. Its totient is φ = 134384052.

The previous prime is 136420237. The next prime is 136420253. The reversal of 136420241 is 142024631.

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 136420241 - 2² = 136420237 is a prime.

It is a super-2 number, since 2×136420241² = 37220964308996162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136420201) 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 3 ways as a sum of consecutive naturals, for example, 1017995 + ... + 1018128.

It is an arithmetic number, because the mean of its divisors is an integer number (34614108).

Almost surely, 2^136420241 is an apocalyptic number.

It is an amenable number.

136420241 is a deficient number, since it is larger than the sum of its proper divisors (2036191).

136420241 is an equidigital number, since it uses as much as digits as its factorization.

136420241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2036190.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 136420241 is about 11679.9075766891. The cubic root of 136420241 is about 514.7854587573.

Adding to 136420241 its reverse (142024631), we get a palindrome (278444872).

The spelling of 136420241 in words is "one hundred thirty-six million, four hundred twenty thousand, two hundred forty-one".