42144426455 has 4 divisors (see below), whose sum is σ = 50573311752. Its totient is φ = 33715541160.

The previous prime is 42144426451. The next prime is 42144426473. The reversal of 42144426455 is 55462444124.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 42144426455 - 2² = 42144426451 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42144426451) 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, 4214442641 + ... + 4214442650.

It is an arithmetic number, because the mean of its divisors is an integer number (12643327938).

Almost surely, 2^42144426455 is an apocalyptic number.

42144426455 is a deficient number, since it is larger than the sum of its proper divisors (8428885297).

42144426455 is an equidigital number, since it uses as much as digits as its factorization.

42144426455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8428885296.

The product of its digits is 614400, while the sum is 41.

The spelling of 42144426455 in words is "forty-two billion, one hundred forty-four million, four hundred twenty-six thousand, four hundred fifty-five".