142868277 has 18 divisors (see below), whose sum is σ = 217803222. Its totient is φ = 90230544.

The previous prime is 142868267. The next prime is 142868287. The reversal of 142868277 is 772868241.

It is an interprime number because it is at equal distance from previous prime (142868267) and next prime (142868287).

It can be written as a sum of positive squares in only one way, i.e., 121022001 + 21846276 = 11001^2 + 4674^2 .

It is not a de Polignac number, because 142868277 - 2⁶ = 142868213 is a prime.

It is a super-2 number, since 2×142868277² = 40822689145897458, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142868267) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 18738 + ... + 25235.

It is an arithmetic number, because the mean of its divisors is an integer number (12100179).

Almost surely, 2^142868277 is an apocalyptic number.

It is an amenable number.

142868277 is a deficient number, since it is larger than the sum of its proper divisors (74934945).

142868277 is a wasteful number, since it uses less digits than its factorization.

142868277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44017 (or 43995 counting only the distinct ones).

The product of its digits is 301056, while the sum is 45.

The square root of 142868277 is about 11952.7518588817. The cubic root of 142868277 is about 522.7715392994.

The spelling of 142868277 in words is "one hundred forty-two million, eight hundred sixty-eight thousand, two hundred seventy-seven".