142371442 has 4 divisors (see below), whose sum is σ = 213557166. Its totient is φ = 71185720.

The previous prime is 142371419. The next prime is 142371443. The reversal of 142371442 is 244173241.

142371442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 244173241 = 13 ⋅18782557.

It can be written as a sum of positive squares in only one way, i.e., 83557881 + 58813561 = 9141^2 + 7669^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 142371442.

It is not an unprimeable number, because it can be changed into a prime (142371443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35592859 + ... + 35592862.

Almost surely, 2^142371442 is an apocalyptic number.

142371442 is a deficient number, since it is larger than the sum of its proper divisors (71185724).

142371442 is an equidigital number, since it uses as much as digits as its factorization.

142371442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71185723.

The product of its digits is 5376, while the sum is 28.

The square root of 142371442 is about 11931.9504692234. The cubic root of 142371442 is about 522.1648432472.

The spelling of 142371442 in words is "one hundred forty-two million, three hundred seventy-one thousand, four hundred forty-two".