4202422661 has 4 divisors (see below), whose sum is σ = 4449624012. Its totient is φ = 3955221312.

The previous prime is 4202422607. The next prime is 4202422673. The reversal of 4202422661 is 1662242024.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3805656100 + 396766561 = 61690^2 + 19919^2 .

It is a cyclic number.

It is not a de Polignac number, because 4202422661 - 2²² = 4198228357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4202422691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123600650 + ... + 123600683.

It is an arithmetic number, because the mean of its divisors is an integer number (1112406003).

Almost surely, 2^4202422661 is an apocalyptic number.

It is an amenable number.

4202422661 is a deficient number, since it is larger than the sum of its proper divisors (247201351).

4202422661 is a wasteful number, since it uses less digits than its factorization.

4202422661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247201350.

The product of its (nonzero) digits is 9216, while the sum is 29.

The square root of 4202422661 is about 64826.0955248733. The cubic root of 4202422661 is about 1613.7388078766.

Adding to 4202422661 its reverse (1662242024), we get a palindrome (5864664685).

The spelling of 4202422661 in words is "four billion, two hundred two million, four hundred twenty-two thousand, six hundred sixty-one".