2145420682 has 16 divisors (see below), whose sum is σ = 3388507200. Its totient is φ = 1015951680.

The previous prime is 2145420671. The next prime is 2145420707. The reversal of 2145420682 is 2860245412.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 173419 + ... + 185377.

It is an arithmetic number, because the mean of its divisors is an integer number (211781700).

Almost surely, 2^2145420682 is an apocalyptic number.

2145420682 is a deficient number, since it is larger than the sum of its proper divisors (1243086518).

2145420682 is a wasteful number, since it uses less digits than its factorization.

2145420682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16701.

The product of its (nonzero) digits is 30720, while the sum is 34.

The square root of 2145420682 is about 46318.6860996726. The cubic root of 2145420682 is about 1289.7458951051.

The spelling of 2145420682 in words is "two billion, one hundred forty-five million, four hundred twenty thousand, six hundred eighty-two".