142769617 has 8 divisors (see below), whose sum is σ = 145708200. Its totient is φ = 139860864.

The previous prime is 142769611. The next prime is 142769647. The reversal of 142769617 is 716967241.

It can be written as a sum of positive squares in 4 ways, for example, as 6370576 + 136399041 = 2524^2 + 11679^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 142769617 - 2³ = 142769609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142769611) 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 7 ways as a sum of consecutive naturals, for example, 2343 + ... + 17059.

It is an arithmetic number, because the mean of its divisors is an integer number (18213525).

Almost surely, 2^142769617 is an apocalyptic number.

It is an amenable number.

142769617 is a deficient number, since it is larger than the sum of its proper divisors (2938583).

142769617 is a wasteful number, since it uses less digits than its factorization.

142769617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14915.

The product of its digits is 127008, while the sum is 43.

The square root of 142769617 is about 11948.6240630459. The cubic root of 142769617 is about 522.6511754741.

The spelling of 142769617 in words is "one hundred forty-two million, seven hundred sixty-nine thousand, six hundred seventeen".