142276445 has 4 divisors (see below), whose sum is σ = 170731740. Its totient is φ = 113821152.

The previous prime is 142276429. The next prime is 142276447. The reversal of 142276445 is 544672241.

It is a happy number.

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 111218116 + 31058329 = 10546^2 + 5573^2 .

It is a cyclic number.

It is not a de Polignac number, because 142276445 - 2⁴ = 142276429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142276447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14227640 + ... + 14227649.

It is an arithmetic number, because the mean of its divisors is an integer number (42682935).

Almost surely, 2^142276445 is an apocalyptic number.

It is an amenable number.

142276445 is a deficient number, since it is larger than the sum of its proper divisors (28455295).

142276445 is an equidigital number, since it uses as much as digits as its factorization.

142276445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28455294.

The product of its digits is 53760, while the sum is 35.

The square root of 142276445 is about 11927.9690224279. The cubic root of 142276445 is about 522.0486796643.

The spelling of 142276445 in words is "one hundred forty-two million, two hundred seventy-six thousand, four hundred forty-five".