42120035055 has 48 divisors (see below), whose sum is σ = 83453819904. Its totient is φ = 19251172800.

The previous prime is 42120035011. The next prime is 42120035081. The reversal of 42120035055 is 55053002124.

It is a happy number.

42120035055 is a `hidden beast` number, since 421 + 200 + 35 + 0 + 5 + 5 = 666.

42120035055 is digitally balanced in base 11, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42120035055 - 2¹² = 42120030959 is a prime.

42120035055 is strictly pandigital in base 11.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2273580 + ... + 2292030.

It is an arithmetic number, because the mean of its divisors is an integer number (1738621248).

Almost surely, 2^42120035055 is an apocalyptic number.

42120035055 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

42120035055 is a deficient number, since it is larger than the sum of its proper divisors (41333784849).

42120035055 is a wasteful number, since it uses less digits than its factorization.

42120035055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25716 (or 25713 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

Adding to 42120035055 its reverse (55053002124), we get a palindrome (97173037179).

The spelling of 42120035055 in words is "forty-two billion, one hundred twenty million, thirty-five thousand, fifty-five".