2042500561 has 8 divisors (see below), whose sum is σ = 2081069280. Its totient is φ = 2004169728.

The previous prime is 2042500553. The next prime is 2042500571. The reversal of 2042500561 is 1650052402.

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

It is a cyclic number.

It is not a de Polignac number, because 2042500561 - 2³ = 2042500553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2042500511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42091 + ... + 76528.

It is an arithmetic number, because the mean of its divisors is an integer number (260133660).

Almost surely, 2^2042500561 is an apocalyptic number.

It is an amenable number.

2042500561 is a deficient number, since it is larger than the sum of its proper divisors (38568719).

2042500561 is a wasteful number, since it uses less digits than its factorization.

2042500561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118943.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 2042500561 is about 45194.0323604787. The cubic root of 2042500561 is about 1268.7831279143.

Adding to 2042500561 its reverse (1650052402), we get a palindrome (3692552963).

The spelling of 2042500561 in words is "two billion, forty-two million, five hundred thousand, five hundred sixty-one".