2421061642 has 4 divisors (see below), whose sum is σ = 3631592466. Its totient is φ = 1210530820.

The previous prime is 2421061639. The next prime is 2421061679. The reversal of 2421061642 is 2461601242.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2461601242 = 2 ⋅1230800621.

It can be written as a sum of positive squares in only one way, i.e., 2197828161 + 223233481 = 46881^2 + 14941^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2421061642.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605265409 + ... + 605265412.

Almost surely, 2^2421061642 is an apocalyptic number.

2421061642 is a deficient number, since it is larger than the sum of its proper divisors (1210530824).

2421061642 is a wasteful number, since it uses less digits than its factorization.

2421061642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1210530823.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 2421061642 is about 49204.2847930950. The cubic root of 2421061642 is about 1342.7709871680.

Adding to 2421061642 its reverse (2461601242), we get a palindrome (4882662884).

The spelling of 2421061642 in words is "two billion, four hundred twenty-one million, sixty-one thousand, six hundred forty-two".