120642453265 has 32 divisors (see below), whose sum is σ = 155300219136. Its totient is φ = 89734613760.

The previous prime is 120642453251. The next prime is 120642453299. The reversal of 120642453265 is 562354246021.

It is a happy number.

It is not a de Polignac number, because 120642453265 - 2¹⁹ = 120641928977 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4501194 + ... + 4527916.

It is an arithmetic number, because the mean of its divisors is an integer number (4853131848).

Almost surely, 2^120642453265 is an apocalyptic number.

It is an amenable number.

120642453265 is a deficient number, since it is larger than the sum of its proper divisors (34657765871).

120642453265 is a wasteful number, since it uses less digits than its factorization.

120642453265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27849.

The product of its (nonzero) digits is 345600, while the sum is 40.

Adding to 120642453265 its reverse (562354246021), we get a palindrome (682996699286).

The spelling of 120642453265 in words is "one hundred twenty billion, six hundred forty-two million, four hundred fifty-three thousand, two hundred sixty-five".