142646378 has 16 divisors (see below), whose sum is σ = 246159744. Its totient is φ = 60728400.

The previous prime is 142646377. The next prime is 142646381. The reversal of 142646378 is 873646241.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (142646377) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31625 + ... + 35852.

It is an arithmetic number, because the mean of its divisors is an integer number (15384984).

Almost surely, 2^142646378 is an apocalyptic number.

142646378 is a deficient number, since it is larger than the sum of its proper divisors (103513366).

142646378 is a wasteful number, since it uses less digits than its factorization.

142646378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67637.

The product of its digits is 193536, while the sum is 41.

The square root of 142646378 is about 11943.4659123723. The cubic root of 142646378 is about 522.5007476924.

The spelling of 142646378 in words is "one hundred forty-two million, six hundred forty-six thousand, three hundred seventy-eight".