120102545 has 4 divisors (see below), whose sum is σ = 144123060. Its totient is φ = 96082032.

The previous prime is 120102523. The next prime is 120102547. The reversal of 120102545 is 545201021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 545201021 = 83 ⋅6568687.

It can be written as a sum of positive squares in 2 ways, for example, as 86136961 + 33965584 = 9281^2 + 5828^2 .

It is a cyclic number.

It is not a de Polignac number, because 120102545 - 2¹⁶ = 120037009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (120102547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12010250 + ... + 12010259.

It is an arithmetic number, because the mean of its divisors is an integer number (36030765).

Almost surely, 2^120102545 is an apocalyptic number.

It is an amenable number.

120102545 is a deficient number, since it is larger than the sum of its proper divisors (24020515).

120102545 is an equidigital number, since it uses as much as digits as its factorization.

120102545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24020514.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 120102545 is about 10959.1306680776. The cubic root of 120102545 is about 493.3828735962.

Adding to 120102545 its reverse (545201021), we get a palindrome (665303566).

The spelling of 120102545 in words is "one hundred twenty million, one hundred two thousand, five hundred forty-five".