142628539 has 8 divisors (see below), whose sum is σ = 144322560. Its totient is φ = 140941416.

The previous prime is 142628537. The next prime is 142628561. The reversal of 142628539 is 935826241.

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 142628539 - 2¹ = 142628537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142628533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48102 + ... + 50980.

It is an arithmetic number, because the mean of its divisors is an integer number (18040320).

Almost surely, 2^142628539 is an apocalyptic number.

142628539 is a deficient number, since it is larger than the sum of its proper divisors (1694021).

142628539 is a wasteful number, since it uses less digits than its factorization.

142628539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3449.

The product of its digits is 103680, while the sum is 40.

The square root of 142628539 is about 11942.7190790037. The cubic root of 142628539 is about 522.4789659046.

It can be divided in two parts, 14262 and 8539, that added together give a square (22801 = 151²).

The spelling of 142628539 in words is "one hundred forty-two million, six hundred twenty-eight thousand, five hundred thirty-nine".