142474 has 4 divisors (see below), whose sum is σ = 213714. Its totient is φ = 71236.

The previous prime is 142469. The next prime is 142501. The reversal of 142474 is 474241.

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

It can be written as a sum of positive squares in only one way, i.e., 140625 + 1849 = 375^2 + 43^2 .

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 an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35617 + ... + 35620.

2¹⁴²⁴⁷⁴ is an apocalyptic number.

142474 is a deficient number, since it is larger than the sum of its proper divisors (71240).

142474 is an equidigital number, since it uses as much as digits as its factorization.

142474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71239.

The product of its digits is 896, while the sum is 22.

The square root of 142474 is about 377.4572823513. The cubic root of 142474 is about 52.2290194529.

It can be divided in two parts, 142 and 474, that added together give a palindrome (616).

The spelling of 142474 in words is "one hundred forty-two thousand, four hundred seventy-four", and thus it is an iban number.