142234024021 has 4 divisors (see below), whose sum is σ = 142287158572. Its totient is φ = 142180889472.

The previous prime is 142234024019. The next prime is 142234024033. The reversal of 142234024021 is 120420432241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 120420432241 = 23 ⋅5235670967.

It can be written as a sum of positive squares in 2 ways, for example, as 11469339025 + 130764684996 = 107095^2 + 361614^2 .

It is a cyclic number.

It is not a de Polignac number, because 142234024021 - 2¹ = 142234024019 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 (142234004021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26563260 + ... + 26568613.

It is an arithmetic number, because the mean of its divisors is an integer number (35571789643).

Almost surely, 2^142234024021 is an apocalyptic number.

It is an amenable number.

142234024021 is a deficient number, since it is larger than the sum of its proper divisors (53134551).

142234024021 is an equidigital number, since it uses as much as digits as its factorization.

142234024021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53134550.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 142234024021 its reverse (120420432241), we get a palindrome (262654456262).

The spelling of 142234024021 in words is "one hundred forty-two billion, two hundred thirty-four million, twenty-four thousand, twenty-one".