142422777 has 24 divisors (see below), whose sum is σ = 236535936. Its totient is φ = 80891136.

The previous prime is 142422733. The next prime is 142422811. The reversal of 142422777 is 777224241.

It is a happy number.

142422777 is a `hidden beast` number, since 1 + 424 + 227 + 7 + 7 = 666.

It is not a de Polignac number, because 142422777 - 2¹⁴ = 142406393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (142422677) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3753 + ... + 17289.

It is an arithmetic number, because the mean of its divisors is an integer number (9855664).

Almost surely, 2^142422777 is an apocalyptic number.

It is an amenable number.

142422777 is a deficient number, since it is larger than the sum of its proper divisors (94113159).

142422777 is a wasteful number, since it uses less digits than its factorization.

142422777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13717 (or 13714 counting only the distinct ones).

The product of its digits is 43904, while the sum is 36.

The square root of 142422777 is about 11934.1014324498. The cubic root of 142422777 is about 522.2275948561.

The spelling of 142422777 in words is "one hundred forty-two million, four hundred twenty-two thousand, seven hundred seventy-seven".