42438412555 has 32 divisors (see below), whose sum is σ = 63569341440. Its totient is φ = 26423003520.

The previous prime is 42438412543. The next prime is 42438412567. The reversal of 42438412555 is 55521483424.

It is an interprime number because it is at equal distance from previous prime (42438412543) and next prime (42438412567).

It is not a de Polignac number, because 42438412555 - 2¹³ = 42438404363 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 252682 + ... + 385648.

It is an arithmetic number, because the mean of its divisors is an integer number (1986541920).

Almost surely, 2^42438412555 is an apocalyptic number.

42438412555 is a deficient number, since it is larger than the sum of its proper divisors (21130928885).

42438412555 is a wasteful number, since it uses less digits than its factorization.

42438412555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133819.

The product of its digits is 768000, while the sum is 43.

Adding to 42438412555 its reverse (55521483424), we get a palindrome (97959895979).

The spelling of 42438412555 in words is "forty-two billion, four hundred thirty-eight million, four hundred twelve thousand, five hundred fifty-five".