2601642421 has 8 divisors (see below), whose sum is σ = 3015183744. Its totient is φ = 2198570640.

The previous prime is 2601642409. The next prime is 2601642427. The reversal of 2601642421 is 1242461062.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2601642421 - 2⁵ = 2601642389 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2601642421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2601642427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2616850 + ... + 2617843.

It is an arithmetic number, because the mean of its divisors is an integer number (376897968).

Almost surely, 2^2601642421 is an apocalyptic number.

It is an amenable number.

2601642421 is a deficient number, since it is larger than the sum of its proper divisors (413541323).

2601642421 is an equidigital number, since it uses as much as digits as its factorization.

2601642421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5234771.

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

The square root of 2601642421 is about 51006.2978562452. The cubic root of 2601642421 is about 1375.3583499713.

The spelling of 2601642421 in words is "two billion, six hundred one million, six hundred forty-two thousand, four hundred twenty-one".