42042220445 has 8 divisors (see below), whose sum is σ = 50455458144. Its totient is φ = 33630580624.

The previous prime is 42042220439. The next prime is 42042220457. The reversal of 42042220445 is 54402224024.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42042220445 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 340799 + ... + 447468.

It is an arithmetic number, because the mean of its divisors is an integer number (6306932268).

Almost surely, 2^42042220445 is an apocalyptic number.

It is an amenable number.

42042220445 is a deficient number, since it is larger than the sum of its proper divisors (8413237699).

42042220445 is a wasteful number, since it uses less digits than its factorization.

42042220445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 798939.

The product of its (nonzero) digits is 20480, while the sum is 29.

Adding to 42042220445 its reverse (54402224024), we get a palindrome (96444444469).

The spelling of 42042220445 in words is "forty-two billion, forty-two million, two hundred twenty thousand, four hundred forty-five".