2050505642 has 4 divisors (see below), whose sum is σ = 3075758466. Its totient is φ = 1025252820.

The previous prime is 2050505629. The next prime is 2050505651. The reversal of 2050505642 is 2465050502.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2465050502 = 2 ⋅1232525251.

It can be written as a sum of positive squares in only one way, i.e., 1987287241 + 63218401 = 44579^2 + 7951^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 512626409 + ... + 512626412.

Almost surely, 2^2050505642 is an apocalyptic number.

2050505642 is a deficient number, since it is larger than the sum of its proper divisors (1025252824).

2050505642 is a wasteful number, since it uses less digits than its factorization.

2050505642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1025252823.

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 2050505642 is about 45282.5092281777. The cubic root of 2050505642 is about 1270.4385287834.

The spelling of 2050505642 in words is "two billion, fifty million, five hundred five thousand, six hundred forty-two".