142402033021 has 2 divisors, whose sum is σ = 142402033022. Its totient is φ = 142402033020.

The previous prime is 142402033001. The next prime is 142402033049. The reversal of 142402033021 is 120330204241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 137259135225 + 5142897796 = 370485^2 + 71714^2 .

It is a cyclic number.

It is not a de Polignac number, because 142402033021 - 2⁷ = 142402032893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 142402032983 and 142402033001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142402033001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71201016510 + 71201016511.

It is an arithmetic number, because the mean of its divisors is an integer number (71201016511).

Almost surely, 2^142402033021 is an apocalyptic number.

It is an amenable number.

142402033021 is a deficient number, since it is larger than the sum of its proper divisors (1).

142402033021 is an equidigital number, since it uses as much as digits as its factorization.

142402033021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 142402033021 its reverse (120330204241), we get a palindrome (262732237262).

The spelling of 142402033021 in words is "one hundred forty-two billion, four hundred two million, thirty-three thousand, twenty-one".