42012443155 has 16 divisors (see below), whose sum is σ = 50675503104. Its totient is φ = 33436378080.

The previous prime is 42012443119. The next prime is 42012443183. The reversal of 42012443155 is 55134421024.

It is not a de Polignac number, because 42012443155 - 2⁷ = 42012443027 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2950062 + ... + 2964268.

It is an arithmetic number, because the mean of its divisors is an integer number (3167218944).

Almost surely, 2^42012443155 is an apocalyptic number.

42012443155 is a deficient number, since it is larger than the sum of its proper divisors (8663059949).

42012443155 is a wasteful number, since it uses less digits than its factorization.

42012443155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17226.

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 42012443155 its reverse (55134421024), we get a palindrome (97146864179).

The spelling of 42012443155 in words is "forty-two billion, twelve million, four hundred forty-three thousand, one hundred fifty-five".