2860042721405 has 4 divisors (see below), whose sum is σ = 3432051265692. Its totient is φ = 2288034177120.

The previous prime is 2860042721387. The next prime is 2860042721407. The reversal of 2860042721405 is 5041272400682.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 499966368889 + 2360076352516 = 707083^2 + 1536254^2 .

It is not a de Polignac number, because 2860042721405 - 2²⁴ = 2860025944189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2860042721407) 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, 286004272136 + ... + 286004272145.

It is an arithmetic number, because the mean of its divisors is an integer number (858012816423).

Almost surely, 2^{2860042721405} is an apocalyptic number.

It is an amenable number.

2860042721405 is a deficient number, since it is larger than the sum of its proper divisors (572008544287).

2860042721405 is an equidigital number, since it uses as much as digits as its factorization.

2860042721405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572008544286.

The product of its (nonzero) digits is 215040, while the sum is 41.

The spelling of 2860042721405 in words is "two trillion, eight hundred sixty billion, forty-two million, seven hundred twenty-one thousand, four hundred five".