142508769 has 16 divisors (see below), whose sum is σ = 205497600. Its totient is φ = 87325056.

The previous prime is 142508741. The next prime is 142508771. The reversal of 142508769 is 967805241.

It is not a de Polignac number, because 142508769 - 2⁹ = 142508257 is a prime.

It is a super-2 number, since 2×142508769² = 40617498483790722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 142508769.

It is not an unprimeable number, because it can be changed into a prime (142508789) 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 in 15 ways as a sum of consecutive naturals, for example, 1677 + ... + 16965.

It is an arithmetic number, because the mean of its divisors is an integer number (12843600).

Almost surely, 2^142508769 is an apocalyptic number.

It is an amenable number.

142508769 is a deficient number, since it is larger than the sum of its proper divisors (62988831).

142508769 is a wasteful number, since it uses less digits than its factorization.

142508769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15544.

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 142508769 is about 11937.7036736552. The cubic root of 142508769 is about 522.3326772061.

The spelling of 142508769 in words is "one hundred forty-two million, five hundred eight thousand, seven hundred sixty-nine".