2142506 has 4 divisors (see below), whose sum is σ = 3213762. Its totient is φ = 1071252.

The previous prime is 2142499. The next prime is 2142521. The reversal of 2142506 is 6052412.

It is a happy number.

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., 1713481 + 429025 = 1309^2 + 655^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 535625 + ... + 535628.

2^2142506 is an apocalyptic number.

2142506 is a deficient number, since it is larger than the sum of its proper divisors (1071256).

2142506 is a wasteful number, since it uses less digits than its factorization.

2142506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1071255.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 2142506 is about 1463.7301663900. The cubic root of 2142506 is about 128.9161564826.

Adding to 2142506 its reverse (6052412), we get a palindrome (8194918).

The spelling of 2142506 in words is "two million, one hundred forty-two thousand, five hundred six".