142685428 has 6 divisors (see below), whose sum is σ = 249699506. Its totient is φ = 71342712.

The previous prime is 142685419. The next prime is 142685429. The reversal of 142685428 is 824586241.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 116899344 + 25786084 = 10812^2 + 5078^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142685429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17835675 + ... + 17835682.

Almost surely, 2^142685428 is an apocalyptic number.

It is an amenable number.

142685428 is a deficient number, since it is larger than the sum of its proper divisors (107014078).

142685428 is a wasteful number, since it uses less digits than its factorization.

142685428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35671361 (or 35671359 counting only the distinct ones).

The product of its digits is 122880, while the sum is 40.

The square root of 142685428 is about 11945.1005855958. The cubic root of 142685428 is about 522.5484222120.

The spelling of 142685428 in words is "one hundred forty-two million, six hundred eighty-five thousand, four hundred twenty-eight".