142769386 has 8 divisors (see below), whose sum is σ = 218194884. Its totient is φ = 70037760.

The previous prime is 142769381. The next prime is 142769387. The reversal of 142769386 is 683967241.

142769386 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 115154361 + 27615025 = 10731^2 + 5255^2 .

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

It is not an unprimeable number, because it can be changed into a prime (142769381) 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 3 ways as a sum of consecutive naturals, for example, 673335 + ... + 673546.

Almost surely, 2^142769386 is an apocalyptic number.

142769386 is a deficient number, since it is larger than the sum of its proper divisors (75425498).

142769386 is a wasteful number, since it uses less digits than its factorization.

142769386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1346936.

The product of its digits is 435456, while the sum is 46.

The square root of 142769386 is about 11948.6143966570. The cubic root of 142769386 is about 522.6508935923.

The spelling of 142769386 in words is "one hundred forty-two million, seven hundred sixty-nine thousand, three hundred eighty-six".