2142386 has 4 divisors (see below), whose sum is σ = 3213582. Its totient is φ = 1071192.

The previous prime is 2142377. The next prime is 2142397. The reversal of 2142386 is 6832412.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1907161 + 235225 = 1381^2 + 485^2 .

It is a d-powerful number, because it can be written as 2¹⁵ + 1 + 4⁶ + 2²¹ + 3⁸ + 8³ + 6⁴ .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 535595 + ... + 535598.

2^2142386 is an apocalyptic number.

2142386 is a deficient number, since it is larger than the sum of its proper divisors (1071196).

2142386 is a wasteful number, since it uses less digits than its factorization.

2142386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1071195.

The product of its digits is 2304, while the sum is 26.

The square root of 2142386 is about 1463.6891746542. The cubic root of 2142386 is about 128.9137496084.

Adding to 2142386 its sum of digits (26), we get a palindrome (2142412).

Adding to 2142386 its reverse (6832412), we get a palindrome (8974798).

The spelling of 2142386 in words is "two million, one hundred forty-two thousand, three hundred eighty-six".