654142 has 4 divisors (see below), whose sum is σ = 981216. Its totient is φ = 327070.

The previous prime is 654127. The next prime is 654149. The reversal of 654142 is 241456.

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

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163534 + ... + 163537.

It is an arithmetic number, because the mean of its divisors is an integer number (245304).

2⁶⁵⁴¹⁴² is an apocalyptic number.

654142 is a deficient number, since it is larger than the sum of its proper divisors (327074).

654142 is a wasteful number, since it uses less digits than its factorization.

654142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327073.

The product of its digits is 960, while the sum is 22.

The square root of 654142 is about 808.7904549387. The cubic root of 654142 is about 86.8075191516.

Adding to 654142 its reverse (241456), we get a palindrome (895598).

Subtracting from 654142 its reverse (241456), we obtain a triangular number (412686 = T₉₀₈).

The spelling of 654142 in words is "six hundred fifty-four thousand, one hundred forty-two".