120145541 has 4 divisors (see below), whose sum is σ = 122412492. Its totient is φ = 117878592.

The previous prime is 120145513. The next prime is 120145547. The reversal of 120145541 is 145541021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 80820100 + 39325441 = 8990^2 + 6271^2 .

It is a cyclic number.

It is not a de Polignac number, because 120145541 - 2²⁶ = 53036677 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 (120145547) 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, 1133396 + ... + 1133501.

It is an arithmetic number, because the mean of its divisors is an integer number (30603123).

Almost surely, 2^120145541 is an apocalyptic number.

It is an amenable number.

120145541 is a deficient number, since it is larger than the sum of its proper divisors (2266951).

120145541 is an equidigital number, since it uses as much as digits as its factorization.

120145541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2266950.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 120145541 is about 10961.0921444900. The cubic root of 120145541 is about 493.4417426210.

Adding to 120145541 its reverse (145541021), we get a palindrome (265686562).

The spelling of 120145541 in words is "one hundred twenty million, one hundred forty-five thousand, five hundred forty-one".