142506769 has 2 divisors, whose sum is σ = 142506770. Its totient is φ = 142506768.

The previous prime is 142506743. The next prime is 142506809. The reversal of 142506769 is 967605241.

It is an a-pointer prime, because the next prime (142506809) can be obtained adding 142506769 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90954369 + 51552400 = 9537^2 + 7180^2 .

It is a cyclic number.

It is not a de Polignac number, because 142506769 - 2⁵ = 142506737 is a prime.

It is a super-2 number, since 2×142506769² = 40616358421638722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (142506719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71253384 + 71253385.

It is an arithmetic number, because the mean of its divisors is an integer number (71253385).

Almost surely, 2^142506769 is an apocalyptic number.

It is an amenable number.

142506769 is a deficient number, since it is larger than the sum of its proper divisors (1).

142506769 is an equidigital number, since it uses as much as digits as its factorization.

142506769 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 142506769 is about 11937.6199051570. The cubic root of 142506769 is about 522.3302336834.

The spelling of 142506769 in words is "one hundred forty-two million, five hundred six thousand, seven hundred sixty-nine".