2581442039 has 8 divisors (see below), whose sum is σ = 2817622800. Its totient is φ = 2345512000.

The previous prime is 2581442029. The next prime is 2581442113. The reversal of 2581442039 is 9302441852.

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

It is a cyclic number.

It is not a de Polignac number, because 2581442039 - 2⁴ = 2581442023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2581441993 and 2581442011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2581442029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40814 + ... + 82635.

It is an arithmetic number, because the mean of its divisors is an integer number (352202850).

Almost surely, 2^2581442039 is an apocalyptic number.

2581442039 is a deficient number, since it is larger than the sum of its proper divisors (236180761).

2581442039 is a wasteful number, since it uses less digits than its factorization.

2581442039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125361.

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 2581442039 is about 50807.8934713889. The cubic root of 2581442039 is about 1371.7894529042.

The spelling of 2581442039 in words is "two billion, five hundred eighty-one million, four hundred forty-two thousand, thirty-nine".