142823899 has 4 divisors (see below), whose sum is σ = 144134320. Its totient is φ = 141513480.

The previous prime is 142823881. The next prime is 142823903. The reversal of 142823899 is 998328241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 998328241 = 1753 ⋅569497.

It is a cyclic number.

It is not a de Polignac number, because 142823899 - 2¹³ = 142815707 is a prime.

It is a super-2 number, since 2×142823899² = 40797332251124402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142823839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 655047 + ... + 655264.

It is an arithmetic number, because the mean of its divisors is an integer number (36033580).

Almost surely, 2^142823899 is an apocalyptic number.

142823899 is a deficient number, since it is larger than the sum of its proper divisors (1310421).

142823899 is a wasteful number, since it uses less digits than its factorization.

142823899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1310420.

The product of its digits is 248832, while the sum is 46.

The square root of 142823899 is about 11950.8953221087. The cubic root of 142823899 is about 522.7174056168.

It can be divided in two parts, 14282 and 3899, that added together give a palindrome (18181).

The spelling of 142823899 in words is "one hundred forty-two million, eight hundred twenty-three thousand, eight hundred ninety-nine".