1656142 has 4 divisors (see below), whose sum is σ = 2484216. Its totient is φ = 828070.

The previous prime is 1656131. The next prime is 1656163. The reversal of 1656142 is 2416561.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 414034 + ... + 414037.

It is an arithmetic number, because the mean of its divisors is an integer number (621054).

2^1656142 is an apocalyptic number.

1656142 is a deficient number, since it is larger than the sum of its proper divisors (828074).

1656142 is an equidigital number, since it uses as much as digits as its factorization.

1656142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 828073.

The product of its digits is 1440, while the sum is 25.

The square root of 1656142 is about 1286.9118073901. The cubic root of 1656142 is about 118.3130155334.

The spelling of 1656142 in words is "one million, six hundred fifty-six thousand, one hundred forty-two".