142444069 has 2 divisors, whose sum is σ = 142444070. Its totient is φ = 142444068.

The previous prime is 142444051. The next prime is 142444103. The reversal of 142444069 is 960444241.

It is an a-pointer prime, because the next prime (142444103) can be obtained adding 142444069 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83722500 + 58721569 = 9150^2 + 7663^2 .

It is an emirp because it is prime and its reverse (960444241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142444069 - 2¹⁹ = 141919781 is a prime.

It is a super-2 number, since 2×142444069² = 40580625586553522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142444369) 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, 71222034 + 71222035.

It is an arithmetic number, because the mean of its divisors is an integer number (71222035).

Almost surely, 2^142444069 is an apocalyptic number.

It is an amenable number.

142444069 is a deficient number, since it is larger than the sum of its proper divisors (1).

142444069 is an equidigital number, since it uses as much as digits as its factorization.

142444069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27648, while the sum is 34.

The square root of 142444069 is about 11934.9934645981. The cubic root of 142444069 is about 522.2536176504.

The spelling of 142444069 in words is "one hundred forty-two million, four hundred forty-four thousand, sixty-nine".