142150243021 has 8 divisors (see below), whose sum is σ = 144838058904. Its totient is φ = 139462639680.

The previous prime is 142150242991. The next prime is 142150243043. The reversal of 142150243021 is 120342051241.

It can be written as a sum of positive squares in 4 ways, for example, as 51542620900 + 90607622121 = 227030^2 + 301011^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 142150243021 - 2⁵ = 142150242989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142150243091) 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, 2158635 + ... + 2223511.

It is an arithmetic number, because the mean of its divisors is an integer number (18104757363).

Almost surely, 2^142150243021 is an apocalyptic number.

It is an amenable number.

142150243021 is a deficient number, since it is larger than the sum of its proper divisors (2687815883).

142150243021 is an equidigital number, since it uses as much as digits as its factorization.

142150243021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106271.

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 142150243021 its reverse (120342051241), we get a palindrome (262492294262).

The spelling of 142150243021 in words is "one hundred forty-two billion, one hundred fifty million, two hundred forty-three thousand, twenty-one".