142774 has 4 divisors (see below), whose sum is σ = 214164. Its totient is φ = 71386.

The previous prime is 142771. The next prime is 142787. The reversal of 142774 is 477241.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35692 + ... + 35695.

It is an arithmetic number, because the mean of its divisors is an integer number (53541).

2¹⁴²⁷⁷⁴ is an apocalyptic number.

142774 is a deficient number, since it is larger than the sum of its proper divisors (71390).

142774 is an equidigital number, since it uses as much as digits as its factorization.

142774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71389.

The product of its digits is 1568, while the sum is 25.

The square root of 142774 is about 377.8544693397. The cubic root of 142774 is about 52.2656523850.

The spelling of 142774 in words is "one hundred forty-two thousand, seven hundred seventy-four", and thus it is an iban number.