142001223 has 16 divisors (see below), whose sum is σ = 233028096. Its totient is φ = 74901600.

The previous prime is 142001213. The next prime is 142001239. The reversal of 142001223 is 322100241.

It is not a de Polignac number, because 142001223 - 2⁸ = 142000967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142001203) 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 15 ways as a sum of consecutive naturals, for example, 259803 + ... + 260348.

It is an arithmetic number, because the mean of its divisors is an integer number (14564256).

Almost surely, 2^142001223 is an apocalyptic number.

142001223 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

142001223 is a deficient number, since it is larger than the sum of its proper divisors (91026873).

142001223 is a wasteful number, since it uses less digits than its factorization.

142001223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520174.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 142001223 is about 11916.4266036426. The cubic root of 142001223 is about 521.7118423974.

Adding to 142001223 its reverse (322100241), we get a palindrome (464101464).

The spelling of 142001223 in words is "one hundred forty-two million, one thousand, two hundred twenty-three".