142144378 has 16 divisors (see below), whose sum is σ = 226606464. Its totient is φ = 66640320.

The previous prime is 142144367. The next prime is 142144381. The reversal of 142144378 is 873441241.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1501 + ... + 16927.

It is an arithmetic number, because the mean of its divisors is an integer number (14162904).

Almost surely, 2^142144378 is an apocalyptic number.

142144378 is a deficient number, since it is larger than the sum of its proper divisors (84462086).

142144378 is a wasteful number, since it uses less digits than its factorization.

142144378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15717.

The product of its digits is 21504, while the sum is 34.

The square root of 142144378 is about 11922.4317150487. The cubic root of 142144378 is about 521.8871004545.

The spelling of 142144378 in words is "one hundred forty-two million, one hundred forty-four thousand, three hundred seventy-eight".