7812142 has 16 divisors (see below), whose sum is σ = 12736080. Its totient is φ = 3572352.

The previous prime is 7812137. The next prime is 7812169. The reversal of 7812142 is 2412187.

It is a happy number.

It is a super-2 number, since 2×7812142² = 122059125256328, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1609 + ... + 4267.

It is an arithmetic number, because the mean of its divisors is an integer number (796005).

Almost surely, 2^7812142 is an apocalyptic number.

7812142 is a deficient number, since it is larger than the sum of its proper divisors (4923938).

7812142 is a wasteful number, since it uses less digits than its factorization.

7812142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2787.

The product of its digits is 896, while the sum is 25.

The square root of 7812142 is about 2795.0209301542. The cubic root of 7812142 is about 198.4221005720.

The spelling of 7812142 in words is "seven million, eight hundred twelve thousand, one hundred forty-two".