142838825 has 6 divisors (see below), whose sum is σ = 177120174. Its totient is φ = 114271040.

The previous prime is 142838791. The next prime is 142838831. The reversal of 142838825 is 528838241.

It can be written as a sum of positive squares in 3 ways, for example, as 1038361 + 141800464 = 1019^2 + 11908^2 .

It is not a de Polignac number, because 142838825 - 2¹⁶ = 142773289 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2856752 + ... + 2856801.

It is an arithmetic number, because the mean of its divisors is an integer number (29520029).

Almost surely, 2^142838825 is an apocalyptic number.

It is an amenable number.

142838825 is a deficient number, since it is larger than the sum of its proper divisors (34281349).

142838825 is an equidigital number, since it uses as much as digits as its factorization.

142838825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5713563 (or 5713558 counting only the distinct ones).

The product of its digits is 122880, while the sum is 41.

The square root of 142838825 is about 11951.5197778358. The cubic root of 142838825 is about 522.7356140732.

The spelling of 142838825 in words is "one hundred forty-two million, eight hundred thirty-eight thousand, eight hundred twenty-five".