142540 has 12 divisors (see below), whose sum is σ = 299376. Its totient is φ = 57008.

The previous prime is 142537. The next prime is 142543. The reversal of 142540 is 45241.

It is an interprime number because it is at equal distance from previous prime (142537) and next prime (142543).

It is a plaindrome in base 16.

It is a zygodrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (142543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3544 + ... + 3583.

It is an arithmetic number, because the mean of its divisors is an integer number (24948).

2¹⁴²⁵⁴⁰ is an apocalyptic number.

142540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142540 is an abundant number, since it is smaller than the sum of its proper divisors (156836).

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

142540 is a wasteful number, since it uses less digits than its factorization.

142540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7136 (or 7134 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 142540 is about 377.5446993404. The cubic root of 142540 is about 52.2370831070.

Adding to 142540 its reverse (45241), we get a palindrome (187781).

The spelling of 142540 in words is "one hundred forty-two thousand, five hundred forty".