2442661 has 4 divisors (see below), whose sum is σ = 2630572. Its totient is φ = 2254752.

The previous prime is 2442631. The next prime is 2442667. The reversal of 2442661 is 1662442.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1662442 = 2 ⋅831221.

It can be written as a sum of positive squares in 2 ways, for example, as 101761 + 2340900 = 319^2 + 1530^2 .

It is a cyclic number.

It is not a de Polignac number, because 2442661 - 2¹⁵ = 2409893 is a prime.

It is a d-powerful number, because it can be written as 2¹⁵ + 4⁷ + 4⁷ + 2²¹ + 6² + 6⁷ + 1 .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2442667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93936 + ... + 93961.

It is an arithmetic number, because the mean of its divisors is an integer number (657643).

2^2442661 is an apocalyptic number.

It is an amenable number.

2442661 is a deficient number, since it is larger than the sum of its proper divisors (187911).

2442661 is a wasteful number, since it uses less digits than its factorization.

2442661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187910.

The product of its digits is 2304, while the sum is 25.

The square root of 2442661 is about 1562.9014684234. The cubic root of 2442661 is about 134.6752321393.

The spelling of 2442661 in words is "two million, four hundred forty-two thousand, six hundred sixty-one".