142028658 has 30 divisors (see below), whose sum is σ = 313646619. Its totient is φ = 46449624.

The previous prime is 142028651. The next prime is 142028707. The reversal of 142028658 is 856820241.

It can be written as a sum of positive squares in 3 ways, for example, as 127306089 + 14722569 = 11283^2 + 3837^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=8427.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (142028651) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 2679760 + ... + 2679812.

Almost surely, 2^142028658 is an apocalyptic number.

142028658 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

142028658 is an abundant number, since it is smaller than the sum of its proper divisors (171617961).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142028658 is an frugal number, since it uses more digits than its factorization.

142028658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220 (or 58 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 142028658 is about 11917.5776901181. The cubic root of 142028658 is about 521.7454389219.

Adding to 142028658 its reverse (856820241), we get a palindrome (998848899).

The spelling of 142028658 in words is "one hundred forty-two million, twenty-eight thousand, six hundred fifty-eight".