142777994 has 16 divisors (see below), whose sum is σ = 218484000. Its totient is φ = 69957744.

The previous prime is 142777993. The next prime is 142778023. The reversal of 142777994 is 499777241.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (142777993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39449 + ... + 42915.

It is an arithmetic number, because the mean of its divisors is an integer number (13655250).

Almost surely, 2^142777994 is an apocalyptic number.

142777994 is a deficient number, since it is larger than the sum of its proper divisors (75706006).

142777994 is a wasteful number, since it uses less digits than its factorization.

142777994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3877.

The product of its digits is 889056, while the sum is 50.

The square root of 142777994 is about 11948.9746003580. The cubic root of 142777994 is about 522.6613974512.

The spelling of 142777994 in words is "one hundred forty-two million, seven hundred seventy-seven thousand, nine hundred ninety-four".