2105402454 has 24 divisors (see below), whose sum is σ = 4562775360. Its totient is φ = 701636208.

The previous prime is 2105402449. The next prime is 2105402491. The reversal of 2105402454 is 4542045012.

2105402454 is a `hidden beast` number, since 210 + 5 + 402 + 45 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 83944 + ... + 106100.

It is an arithmetic number, because the mean of its divisors is an integer number (190115640).

Almost surely, 2^2105402454 is an apocalyptic number.

2105402454 is an abundant number, since it is smaller than the sum of its proper divisors (2457372906).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2105402454 is a wasteful number, since it uses less digits than its factorization.

2105402454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27444 (or 27441 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 2105402454 is about 45884.6646931194. The cubic root of 2105402454 is about 1281.6763627424.

Adding to 2105402454 its reverse (4542045012), we get a palindrome (6647447466).

The spelling of 2105402454 in words is "two billion, one hundred five million, four hundred two thousand, four hundred fifty-four".