42155310445 has 4 divisors (see below), whose sum is σ = 50586372540. Its totient is φ = 33724248352.

The previous prime is 42155310437. The next prime is 42155310467. The reversal of 42155310445 is 54401355124.

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

It can be written as a sum of positive squares in 2 ways, for example, as 19113892009 + 23041418436 = 138253^2 + 151794^2 .

It is a cyclic number.

It is not a de Polignac number, because 42155310445 - 2³ = 42155310437 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42155310445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4215531040 + ... + 4215531049.

It is an arithmetic number, because the mean of its divisors is an integer number (12646593135).

Almost surely, 2^42155310445 is an apocalyptic number.

It is an amenable number.

42155310445 is a deficient number, since it is larger than the sum of its proper divisors (8431062095).

42155310445 is an equidigital number, since it uses as much as digits as its factorization.

42155310445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8431062094.

The product of its (nonzero) digits is 48000, while the sum is 34.

Adding to 42155310445 its reverse (54401355124), we get a palindrome (96556665569).

The spelling of 42155310445 in words is "forty-two billion, one hundred fifty-five million, three hundred ten thousand, four hundred forty-five".