120234421504553 has 4 divisors (see below), whose sum is σ = 120238487216388. Its totient is φ = 120230355792720.

The previous prime is 120234421504541. The next prime is 120234421504591. The reversal of 120234421504553 is 355405124432021.

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 61036046878249 + 59198374626304 = 7812557^2 + 7694048^2 .

It is a cyclic number.

It is not a de Polignac number, because 120234421504553 - 2¹⁰ = 120234421503529 is a prime.

It is a super-2 number, since 2×120234421504553² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 120234421504553.

It is not an unprimeable number, because it can be changed into a prime (120234421504523) 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, 2032811558 + ... + 2032870703.

It is an arithmetic number, because the mean of its divisors is an integer number (30059621804097).

Almost surely, 2^{120234421504553} is an apocalyptic number.

It is an amenable number.

120234421504553 is a deficient number, since it is larger than the sum of its proper divisors (4065711835).

120234421504553 is an equidigital number, since it uses as much as digits as its factorization.

120234421504553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4065711834.

The product of its (nonzero) digits is 576000, while the sum is 41.

Adding to 120234421504553 its reverse (355405124432021), we get a palindrome (475639545936574).

The spelling of 120234421504553 in words is "one hundred twenty trillion, two hundred thirty-four billion, four hundred twenty-one million, five hundred four thousand, five hundred fifty-three".