2142555 has 8 divisors (see below), whose sum is σ = 3428112. Its totient is φ = 1142688.

The previous prime is 2142551. The next prime is 2142557. The reversal of 2142555 is 5552412.

It is a happy number.

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

It is not a de Polignac number, because 2142555 - 2² = 2142551 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2142551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71404 + ... + 71433.

It is an arithmetic number, because the mean of its divisors is an integer number (428514).

2^2142555 is an apocalyptic number.

2142555 is a deficient number, since it is larger than the sum of its proper divisors (1285557).

2142555 is a wasteful number, since it uses less digits than its factorization.

2142555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142845.

The product of its digits is 2000, while the sum is 24.

The square root of 2142555 is about 1463.7469043520. The cubic root of 2142555 is about 128.9171392638.

Adding to 2142555 its reverse (5552412), we get a palindrome (7694967).

The spelling of 2142555 in words is "two million, one hundred forty-two thousand, five hundred fifty-five".