142284277 has 12 divisors (see below), whose sum is σ = 149047780. Its totient is φ = 135826704.

The previous prime is 142284257. The next prime is 142284313. The reversal of 142284277 is 772482241.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 6 ways, for example, as 34975396 + 107308881 = 5914^2 + 10359^2 .

It is not a de Polignac number, because 142284277 - 2²⁷ = 8066549 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142284257) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2684583 + ... + 2684635.

Almost surely, 2^142284277 is an apocalyptic number.

It is an amenable number.

142284277 is a deficient number, since it is larger than the sum of its proper divisors (6763503).

142284277 is an frugal number, since it uses more digits than its factorization.

142284277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217 (or 90 counting only the distinct ones).

The product of its digits is 50176, while the sum is 37.

The square root of 142284277 is about 11928.2973219148. The cubic root of 142284277 is about 522.0582586925.

Multiplying 142284277 by its sum of digits (37), we get a square (5264518249 = 72557²).

142284277 divided by its sum of digits (37) gives a square (3845521 = 1961²).

The spelling of 142284277 in words is "one hundred forty-two million, two hundred eighty-four thousand, two hundred seventy-seven".