120542145554 has 8 divisors (see below), whose sum is σ = 180900616140. Its totient is φ = 60241940176.

The previous prime is 120542145551. The next prime is 120542145583. The reversal of 120542145554 is 455541245021.

It can be written as a sum of positive squares in 2 ways, for example, as 103894694929 + 16647450625 = 322327^2 + 129025^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (120542145551) 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, 14561129 + ... + 14569404.

Almost surely, 2^120542145554 is an apocalyptic number.

120542145554 is a deficient number, since it is larger than the sum of its proper divisors (60358470586).

120542145554 is a wasteful number, since it uses less digits than its factorization.

120542145554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29132604.

The product of its (nonzero) digits is 160000, while the sum is 38.

The spelling of 120542145554 in words is "one hundred twenty billion, five hundred forty-two million, one hundred forty-five thousand, five hundred fifty-four".