142447794 has 16 divisors (see below), whose sum is σ = 301654368. Its totient is φ = 44689472.

The previous prime is 142447783. The next prime is 142447801. The reversal of 142447794 is 497744241.

142447794 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 698172 + ... + 698375.

It is an arithmetic number, because the mean of its divisors is an integer number (18853398).

Almost surely, 2^142447794 is an apocalyptic number.

142447794 is an abundant number, since it is smaller than the sum of its proper divisors (159206574).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142447794 is a wasteful number, since it uses less digits than its factorization.

142447794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1396569.

The product of its digits is 225792, while the sum is 42.

The square root of 142447794 is about 11935.1495172872. The cubic root of 142447794 is about 522.2581700285.

The spelling of 142447794 in words is "one hundred forty-two million, four hundred forty-seven thousand, seven hundred ninety-four".