42145344505 has 32 divisors (see below), whose sum is σ = 57346144128. Its totient is φ = 29463321600.

The previous prime is 42145344481. The next prime is 42145344529. The reversal of 42145344505 is 50544354124.

It is an interprime number because it is at equal distance from previous prime (42145344481) and next prime (42145344529).

It is not a de Polignac number, because 42145344505 - 2²³ = 42136955897 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

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, 44145 + ... + 293665.

It is an arithmetic number, because the mean of its divisors is an integer number (1792067004).

Almost surely, 2^42145344505 is an apocalyptic number.

It is an amenable number.

42145344505 is a deficient number, since it is larger than the sum of its proper divisors (15200799623).

42145344505 is a wasteful number, since it uses less digits than its factorization.

42145344505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249657.

The product of its (nonzero) digits is 192000, while the sum is 37.

Adding to 42145344505 its reverse (50544354124), we get a palindrome (92689698629).

The spelling of 42145344505 in words is "forty-two billion, one hundred forty-five million, three hundred forty-four thousand, five hundred five".