142103321 has 2 divisors, whose sum is σ = 142103322. Its totient is φ = 142103320.

The previous prime is 142103309. The next prime is 142103359. The reversal of 142103321 is 123301241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 132250000 + 9853321 = 11500^2 + 3139^2 .

It is a cyclic number.

It is not a de Polignac number, because 142103321 - 2⁶ = 142103257 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 142103321.

It is not a weakly prime, because it can be changed into another prime (142103921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71051660 + 71051661.

It is an arithmetic number, because the mean of its divisors is an integer number (71051661).

Almost surely, 2^142103321 is an apocalyptic number.

It is an amenable number.

142103321 is a deficient number, since it is larger than the sum of its proper divisors (1).

142103321 is an equidigital number, since it uses as much as digits as its factorization.

142103321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 142103321 is about 11920.7097523595. The cubic root of 142103321 is about 521.8368483040.

Adding to 142103321 its reverse (123301241), we get a palindrome (265404562).

The spelling of 142103321 in words is "one hundred forty-two million, one hundred three thousand, three hundred twenty-one".