2105451642 has 32 divisors (see below), whose sum is σ = 4814985600. Its totient is φ = 601242048.

The previous prime is 2105451629. The next prime is 2105451653. The reversal of 2105451642 is 2461545012.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74784 + ... + 99012.

It is an arithmetic number, because the mean of its divisors is an integer number (150468300).

Almost surely, 2^2105451642 is an apocalyptic number.

2105451642 is an abundant number, since it is smaller than the sum of its proper divisors (2709533958).

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

2105451642 is a wasteful number, since it uses less digits than its factorization.

2105451642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26310.

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 2105451642 is about 45885.2006860600. The cubic root of 2105451642 is about 1281.6863438280.

Adding to 2105451642 its reverse (2461545012), we get a palindrome (4566996654).

The spelling of 2105451642 in words is "two billion, one hundred five million, four hundred fifty-one thousand, six hundred forty-two".