120103423434555 has 64 divisors (see below), whose sum is σ = 221591791411200. Its totient is φ = 54936297601920.

The previous prime is 120103423434551. The next prime is 120103423434587. The reversal of 120103423434555 is 555434324301021.

It is not a de Polignac number, because 120103423434555 - 2² = 120103423434551 is a prime.

It is not an unprimeable number, because it can be changed into a prime (120103423434551) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 79398229 + ... + 80896758.

It is an arithmetic number, because the mean of its divisors is an integer number (3462371740800).

Almost surely, 2^{120103423434555} is an apocalyptic number.

120103423434555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

120103423434555 is a deficient number, since it is larger than the sum of its proper divisors (101488367976645).

120103423434555 is a wasteful number, since it uses less digits than its factorization.

120103423434555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160295264.

The product of its (nonzero) digits is 864000, while the sum is 42.

Adding to 120103423434555 its reverse (555434324301021), we get a palindrome (675537747735576).

The spelling of 120103423434555 in words is "one hundred twenty trillion, one hundred three billion, four hundred twenty-three million, four hundred thirty-four thousand, five hundred fifty-five".