4202561 has 8 divisors (see below), whose sum is σ = 4650048. Its totient is φ = 3766000.

The previous prime is 4202521. The next prime is 4202567. The reversal of 4202561 is 1652024.

It is a happy number.

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 4202561 - 2¹⁰ = 4201537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4202567) 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, 1910 + ... + 3471.

It is an arithmetic number, because the mean of its divisors is an integer number (581256).

Almost surely, 2^4202561 is an apocalyptic number.

It is an amenable number.

4202561 is a deficient number, since it is larger than the sum of its proper divisors (447487).

4202561 is a wasteful number, since it uses less digits than its factorization.

4202561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5463.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 4202561 is about 2050.0148779948. The cubic root of 4202561 is about 161.3756515168.

Adding to 4202561 its reverse (1652024), we get a palindrome (5854585).

The spelling of 4202561 in words is "four million, two hundred two thousand, five hundred sixty-one".