42055505 has 12 divisors (see below), whose sum is σ = 51678900. Its totient is φ = 32854752.

The previous prime is 42055487. The next prime is 42055511. The reversal of 42055505 is 50555024.

It can be written as a sum of positive squares in 2 ways, for example, as 23193856 + 18861649 = 4816^2 + 4343^2 .

It is a de Polignac number, because none of the positive numbers 2^k-42055505 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6971 + ... + 11519.

It is an arithmetic number, because the mean of its divisors is an integer number (4306575).

Almost surely, 2^42055505 is an apocalyptic number.

It is an amenable number.

42055505 is a deficient number, since it is larger than the sum of its proper divisors (9623395).

42055505 is an equidigital number, since it uses as much as digits as its factorization.

42055505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4640 (or 4597 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 26.

The square root of 42055505 is about 6485.0215882447. The cubic root of 42055505 is about 347.7557215756.

The spelling of 42055505 in words is "forty-two million, fifty-five thousand, five hundred five".