1642600241 has 4 divisors (see below), whose sum is σ = 1645549812. Its totient is φ = 1639650672.

The previous prime is 1642600213. The next prime is 1642600273. The reversal of 1642600241 is 1420062461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1420062461 = 1621 ⋅876041.

It can be written as a sum of positive squares in 2 ways, for example, as 144600625 + 1497999616 = 12025^2 + 38704^2 .

It is a cyclic number.

It is not a de Polignac number, because 1642600241 - 2¹⁸ = 1642338097 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1642600241.

It is not an unprimeable number, because it can be changed into a prime (1642603241) 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, 1473950 + ... + 1475063.

It is an arithmetic number, because the mean of its divisors is an integer number (411387453).

Almost surely, 2^1642600241 is an apocalyptic number.

It is an amenable number.

1642600241 is a deficient number, since it is larger than the sum of its proper divisors (2949571).

1642600241 is an equidigital number, since it uses as much as digits as its factorization.

1642600241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2949570.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 1642600241 is about 40529.0049347378. The cubic root of 1642600241 is about 1179.8966300812.

The spelling of 1642600241 in words is "one billion, six hundred forty-two million, six hundred thousand, two hundred forty-one".