142274141 has 4 divisors (see below), whose sum is σ = 145744284. Its totient is φ = 138804000.

The previous prime is 142274137. The next prime is 142274183. The reversal of 142274141 is 141472241.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4305625 + 137968516 = 2075^2 + 11746^2 .

It is a cyclic number.

It is not a de Polignac number, because 142274141 - 2² = 142274137 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 142274141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142274191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1735010 + ... + 1735091.

It is an arithmetic number, because the mean of its divisors is an integer number (36436071).

Almost surely, 2^142274141 is an apocalyptic number.

It is an amenable number.

142274141 is a deficient number, since it is larger than the sum of its proper divisors (3470143).

142274141 is an equidigital number, since it uses as much as digits as its factorization.

142274141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3470142.

The product of its digits is 1792, while the sum is 26.

The square root of 142274141 is about 11927.8724423092. The cubic root of 142274141 is about 522.0458616606.

The spelling of 142274141 in words is "one hundred forty-two million, two hundred seventy-four thousand, one hundred forty-one".