2109261442 has 8 divisors (see below), whose sum is σ = 3249402876. Its totient is φ = 1026127152.

The previous prime is 2109261439. The next prime is 2109261443. The reversal of 2109261442 is 2441629012.

It can be written as a sum of positive squares in 2 ways, for example, as 1951784041 + 157477401 = 44179^2 + 12549^2 .

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

It is not an unprimeable number, because it can be changed into a prime (2109261443) 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, 14251693 + ... + 14251840.

Almost surely, 2^2109261442 is an apocalyptic number.

2109261442 is a deficient number, since it is larger than the sum of its proper divisors (1140141434).

2109261442 is a wasteful number, since it uses less digits than its factorization.

2109261442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28503572.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 2109261442 is about 45926.6963976291. The cubic root of 2109261442 is about 1282.4589454969.

The spelling of 2109261442 in words is "two billion, one hundred nine million, two hundred sixty-one thousand, four hundred forty-two".