4142609 has 2 divisors, whose sum is σ = 4142610. Its totient is φ = 4142608.

The previous prime is 4142591. The next prime is 4142629. The reversal of 4142609 is 9062414.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3341584 + 801025 = 1828^2 + 895^2 .

It is a cyclic number.

It is not a de Polignac number, because 4142609 - 2¹² = 4138513 is a prime.

It is a super-2 number, since 2×4142609² = 34322418653762, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4142629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2071304 + 2071305.

It is an arithmetic number, because the mean of its divisors is an integer number (2071305).

Almost surely, 2^4142609 is an apocalyptic number.

It is an amenable number.

4142609 is a deficient number, since it is larger than the sum of its proper divisors (1).

4142609 is an equidigital number, since it uses as much as digits as its factorization.

4142609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 4142609 is about 2035.3400207336. The cubic root of 4142609 is about 160.6046005071.

The spelling of 4142609 in words is "four million, one hundred forty-two thousand, six hundred nine".