2142688 has 12 divisors (see below), whose sum is σ = 4218480. Its totient is φ = 1071328.

The previous prime is 2142677. The next prime is 2142691. The reversal of 2142688 is 8862412.

It is a super-2 number, since 2×2142688² = 9182223730688, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33448 + ... + 33511.

It is an arithmetic number, because the mean of its divisors is an integer number (351540).

2^2142688 is an apocalyptic number.

It is an amenable number.

2142688 is a deficient number, since it is larger than the sum of its proper divisors (2075792).

2142688 is an equidigital number, since it uses as much as digits as its factorization.

2142688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66969 (or 66961 counting only the distinct ones).

The product of its digits is 6144, while the sum is 31.

The square root of 2142688 is about 1463.7923349984. The cubic root of 2142688 is about 128.9198067371.

The spelling of 2142688 in words is "two million, one hundred forty-two thousand, six hundred eighty-eight".