42120313531154 has 4 divisors (see below), whose sum is σ = 63180470296734. Its totient is φ = 21060156765576.

The previous prime is 42120313531117. The next prime is 42120313531213. The reversal of 42120313531154 is 45113531302124.

42120313531154 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 38729798948929 + 3390514582225 = 6223327^2 + 1841335^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10530078382787 + ... + 10530078382790.

Almost surely, 2^{42120313531154} is an apocalyptic number.

42120313531154 is a deficient number, since it is larger than the sum of its proper divisors (21060156765580).

42120313531154 is a wasteful number, since it uses less digits than its factorization.

42120313531154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21060156765579.

The product of its (nonzero) digits is 43200, while the sum is 35.

Adding to 42120313531154 its reverse (45113531302124), we get a palindrome (87233844833278).

The spelling of 42120313531154 in words is "forty-two trillion, one hundred twenty billion, three hundred thirteen million, five hundred thirty-one thousand, one hundred fifty-four".