2151142 has 16 divisors (see below), whose sum is σ = 3882240. Its totient is φ = 873288.

The previous prime is 2151139. The next prime is 2151157. The reversal of 2151142 is 2411512.

It is a congruent number.

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, 3778 + ... + 4309.

It is an arithmetic number, because the mean of its divisors is an integer number (242640).

2^2151142 is an apocalyptic number.

2151142 is a deficient number, since it is larger than the sum of its proper divisors (1731098).

2151142 is a wasteful number, since it uses less digits than its factorization.

2151142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8115.

The product of its digits is 80, while the sum is 16.

The square root of 2151142 is about 1466.6771969319. The cubic root of 2151142 is about 129.0891357592.

Adding to 2151142 its reverse (2411512), we get a palindrome (4562654).

The spelling of 2151142 in words is "two million, one hundred fifty-one thousand, one hundred forty-two".