42154342155 has 24 divisors (see below), whose sum is σ = 76244377248. Its totient is φ = 21504823296.

The previous prime is 42154342151. The next prime is 42154342157. The reversal of 42154342155 is 55124345124.

42154342155 is a `hidden beast` number, since 4 + 2 + 1 + 5 + 434 + 215 + 5 = 666.

It is not a de Polignac number, because 42154342155 - 2² = 42154342151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42154342151) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20363382 + ... + 20365451.

It is an arithmetic number, because the mean of its divisors is an integer number (3176849052).

Almost surely, 2^42154342155 is an apocalyptic number.

42154342155 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

42154342155 is a deficient number, since it is larger than the sum of its proper divisors (34090035093).

42154342155 is a wasteful number, since it uses less digits than its factorization.

42154342155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40728867 (or 40728864 counting only the distinct ones).

The product of its digits is 96000, while the sum is 36.

Adding to 42154342155 its reverse (55124345124), we get a palindrome (97278687279).

The spelling of 42154342155 in words is "forty-two billion, one hundred fifty-four million, three hundred forty-two thousand, one hundred fifty-five".