142678783 has 4 divisors (see below), whose sum is σ = 153654088. Its totient is φ = 131703480.

The previous prime is 142678777. The next prime is 142678801. The reversal of 142678783 is 387876241.

142678783 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 387876241 = 19 ⋅20414539.

It is a cyclic number.

It is not a de Polignac number, because 142678783 - 2⁹ = 142678271 is a prime.

It is a super-2 number, since 2×142678783² = 40714470236722178, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142678583) 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, 5487633 + ... + 5487658.

It is an arithmetic number, because the mean of its divisors is an integer number (38413522).

Almost surely, 2^142678783 is an apocalyptic number.

142678783 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

142678783 is a deficient number, since it is larger than the sum of its proper divisors (10975305).

142678783 is a wasteful number, since it uses less digits than its factorization.

142678783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10975304.

The product of its digits is 451584, while the sum is 46.

The square root of 142678783 is about 11944.8224348460. The cubic root of 142678783 is about 522.5403102223.

The spelling of 142678783 in words is "one hundred forty-two million, six hundred seventy-eight thousand, seven hundred eighty-three".