42240020555 has 8 divisors (see below), whose sum is σ = 51074956944. Its totient is φ = 33534061600.

The previous prime is 42240020551. The next prime is 42240020591. The reversal of 42240020555 is 55502004224.

42240020555 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42240020555 - 2² = 42240020551 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42240020551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32243636 + ... + 32244945.

It is an arithmetic number, because the mean of its divisors is an integer number (6384369618).

Almost surely, 2^42240020555 is an apocalyptic number.

42240020555 is a deficient number, since it is larger than the sum of its proper divisors (8834936389).

42240020555 is a wasteful number, since it uses less digits than its factorization.

42240020555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64488717.

The product of its (nonzero) digits is 16000, while the sum is 29.

Adding to 42240020555 its reverse (55502004224), we get a palindrome (97742024779).

The spelling of 42240020555 in words is "forty-two billion, two hundred forty million, twenty thousand, five hundred fifty-five".