2105402452 has 6 divisors (see below), whose sum is σ = 3684454298. Its totient is φ = 1052701224.

The previous prime is 2105402449. The next prime is 2105402491. The reversal of 2105402452 is 2542045012.

It can be written as a sum of positive squares in only one way, i.e., 1742728516 + 362673936 = 41746^2 + 19044^2 .

It is a super-2 number, since 2×2105402452² = 8865438969775224608, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 263175303 + ... + 263175310.

Almost surely, 2^2105402452 is an apocalyptic number.

It is an amenable number.

2105402452 is a deficient number, since it is larger than the sum of its proper divisors (1579051846).

2105402452 is a wasteful number, since it uses less digits than its factorization.

2105402452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526350617 (or 526350615 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 2105402452 is about 45884.6646713256. The cubic root of 2105402452 is about 1281.6763623366.

Adding to 2105402452 its reverse (2542045012), we get a palindrome (4647447464).

The spelling of 2105402452 in words is "two billion, one hundred five million, four hundred two thousand, four hundred fifty-two".