2142025666 has 16 divisors (see below), whose sum is σ = 3626000640. Its totient is φ = 940073680.

The previous prime is 2142025657. The next prime is 2142025679. The reversal of 2142025666 is 6665202412.

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, 1678066 + ... + 1679341.

It is an arithmetic number, because the mean of its divisors is an integer number (226625040).

Almost surely, 2^2142025666 is an apocalyptic number.

2142025666 is a deficient number, since it is larger than the sum of its proper divisors (1483974974).

2142025666 is a wasteful number, since it uses less digits than its factorization.

2142025666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3357449.

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 2142025666 is about 46282.0231407401. The cubic root of 2142025666 is about 1289.0652174628.

The spelling of 2142025666 in words is "two billion, one hundred forty-two million, twenty-five thousand, six hundred sixty-six".