42004243155 has 64 divisors (see below), whose sum is σ = 79460444160. Its totient is φ = 18546361344.

The previous prime is 42004243123. The next prime is 42004243163. The reversal of 42004243155 is 55134240024.

It is not a de Polignac number, because 42004243155 - 2⁵ = 42004243123 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 492786 + ... + 571704.

It is an arithmetic number, because the mean of its divisors is an integer number (1241569440).

Almost surely, 2^42004243155 is an apocalyptic number.

42004243155 is a deficient number, since it is larger than the sum of its proper divisors (37456201005).

42004243155 is a wasteful number, since it uses less digits than its factorization.

42004243155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79108.

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 42004243155 its reverse (55134240024), we get a palindrome (97138483179).

The spelling of 42004243155 in words is "forty-two billion, four million, two hundred forty-three thousand, one hundred fifty-five".