142450409 has 2 divisors, whose sum is σ = 142450410. Its totient is φ = 142450408.

The previous prime is 142450387. The next prime is 142450423. The reversal of 142450409 is 904054241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99940009 + 42510400 = 9997^2 + 6520^2 .

It is a cyclic number.

It is not a de Polignac number, because 142450409 - 2¹² = 142446313 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (142450459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71225204 + 71225205.

It is an arithmetic number, because the mean of its divisors is an integer number (71225205).

Almost surely, 2^142450409 is an apocalyptic number.

It is an amenable number.

142450409 is a deficient number, since it is larger than the sum of its proper divisors (1).

142450409 is an equidigital number, since it uses as much as digits as its factorization.

142450409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 142450409 is about 11935.2590671506. The cubic root of 142450409 is about 522.2613658116.

The spelling of 142450409 in words is "one hundred forty-two million, four hundred fifty thousand, four hundred nine".