42120233553 has 16 divisors (see below), whose sum is σ = 56469676032. Its totient is φ = 27925554000.

The previous prime is 42120233513. The next prime is 42120233627. The reversal of 42120233553 is 35533202124.

42120233553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42120233553 - 2⁸ = 42120233297 is a prime.

It is a super-2 number, since 2×42120233553² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42120233553.

It is not an unprimeable number, because it can be changed into a prime (42120233513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2783538 + ... + 2798628.

It is an arithmetic number, because the mean of its divisors is an integer number (3529354752).

Almost surely, 2^42120233553 is an apocalyptic number.

It is an amenable number.

42120233553 is a deficient number, since it is larger than the sum of its proper divisors (14349442479).

42120233553 is a wasteful number, since it uses less digits than its factorization.

42120233553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20156.

The product of its (nonzero) digits is 21600, while the sum is 30.

Adding to 42120233553 its reverse (35533202124), we get a palindrome (77653435677).

The spelling of 42120233553 in words is "forty-two billion, one hundred twenty million, two hundred thirty-three thousand, five hundred fifty-three".