142247069 has 2 divisors, whose sum is σ = 142247070. Its totient is φ = 142247068.

The previous prime is 142247057. The next prime is 142247101. The reversal of 142247069 is 960742241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95160025 + 47087044 = 9755^2 + 6862^2 .

It is a cyclic number.

It is not a de Polignac number, because 142247069 - 2⁸ = 142246813 is a prime.

It is a super-2 number, since 2×142247069² = 40468457278181522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142247269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71123534 + 71123535.

It is an arithmetic number, because the mean of its divisors is an integer number (71123535).

Almost surely, 2^142247069 is an apocalyptic number.

It is an amenable number.

142247069 is a deficient number, since it is larger than the sum of its proper divisors (1).

142247069 is an equidigital number, since it uses as much as digits as its factorization.

142247069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 142247069 is about 11926.7375673316. The cubic root of 142247069 is about 522.0127478378.

The spelling of 142247069 in words is "one hundred forty-two million, two hundred forty-seven thousand, sixty-nine".