142462121 has 2 divisors, whose sum is σ = 142462122. Its totient is φ = 142462120.

The previous prime is 142462109. The next prime is 142462141. The reversal of 142462121 is 121264241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 107226025 + 35236096 = 10355^2 + 5936^2 .

It is a cyclic number.

It is not a de Polignac number, because 142462121 - 2¹⁸ = 142199977 is a prime.

It is not a weakly prime, because it can be changed into another prime (142462141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71231060 + 71231061.

It is an arithmetic number, because the mean of its divisors is an integer number (71231061).

Almost surely, 2^142462121 is an apocalyptic number.

It is an amenable number.

142462121 is a deficient number, since it is larger than the sum of its proper divisors (1).

142462121 is an equidigital number, since it uses as much as digits as its factorization.

142462121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 768, while the sum is 23.

The square root of 142462121 is about 11935.7497041451. The cubic root of 142462121 is about 522.2756785293.

The spelling of 142462121 in words is "one hundred forty-two million, four hundred sixty-two thousand, one hundred twenty-one".