1642143 has 8 divisors (see below), whose sum is σ = 2197888. Its totient is φ = 1090584.

The previous prime is 1642141. The next prime is 1642153. The reversal of 1642143 is 3412461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1642143 - 2¹ = 1642141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1642141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30 + ... + 1812.

It is an arithmetic number, because the mean of its divisors is an integer number (274736).

2^1642143 is an apocalyptic number.

1642143 is a deficient number, since it is larger than the sum of its proper divisors (555745).

1642143 is a wasteful number, since it uses less digits than its factorization.

1642143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2093.

The product of its digits is 576, while the sum is 21.

The square root of 1642143 is about 1281.4612752635. The cubic root of 1642143 is about 117.9787139618.

The spelling of 1642143 in words is "one million, six hundred forty-two thousand, one hundred forty-three".