120136541 has 4 divisors (see below), whose sum is σ = 137298912. Its totient is φ = 102974172.

The previous prime is 120136507. The next prime is 120136547. The reversal of 120136541 is 145631021.

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, and also an emirpimes, since its reverse is a distinct semiprime: 145631021 = 431 ⋅337891.

It is not a de Polignac number, because 120136541 - 2⁶ = 120136477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120136547) 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, 8581175 + ... + 8581188.

It is an arithmetic number, because the mean of its divisors is an integer number (34324728).

Almost surely, 2^120136541 is an apocalyptic number.

It is an amenable number.

120136541 is a deficient number, since it is larger than the sum of its proper divisors (17162371).

120136541 is an equidigital number, since it uses as much as digits as its factorization.

120136541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17162370.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 120136541 is about 10960.6815937696. The cubic root of 120136541 is about 493.4294212133.

Adding to 120136541 its reverse (145631021), we get a palindrome (265767562).

The spelling of 120136541 in words is "one hundred twenty million, one hundred thirty-six thousand, five hundred forty-one".