42155231141 has 4 divisors (see below), whose sum is σ = 42176534400. Its totient is φ = 42133927884.

The previous prime is 42155231123. The next prime is 42155231147. The reversal of 42155231141 is 14113255124.

It is a happy number.

42155231141 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42155231141 - 2⁶ = 42155231077 is a prime.

It is a super-2 number, since 2×42155231141² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42155231147) 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, 10648661 + ... + 10652618.

It is an arithmetic number, because the mean of its divisors is an integer number (10544133600).

Almost surely, 2^42155231141 is an apocalyptic number.

It is an amenable number.

42155231141 is a deficient number, since it is larger than the sum of its proper divisors (21303259).

42155231141 is a wasteful number, since it uses less digits than its factorization.

42155231141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21303258.

The product of its digits is 4800, while the sum is 29.

Adding to 42155231141 its reverse (14113255124), we get a palindrome (56268486265).

The spelling of 42155231141 in words is "forty-two billion, one hundred fifty-five million, two hundred thirty-one thousand, one hundred forty-one".