142134540 has 48 divisors (see below), whose sum is σ = 404732160. Its totient is φ = 37259200.

The previous prime is 142134491. The next prime is 142134547. The reversal of 142134540 is 45431241.

It is a super-2 number, since 2×142134540² = 40404454922023200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 142134540.

It is not an unprimeable number, because it can be changed into a prime (142134547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16536 + ... + 23615.

It is an arithmetic number, because the mean of its divisors is an integer number (8431920).

Almost surely, 2^142134540 is an apocalyptic number.

142134540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142134540 is an abundant number, since it is smaller than the sum of its proper divisors (262597620).

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

142134540 is a wasteful number, since it uses less digits than its factorization.

142134540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40222 (or 40220 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 142134540 is about 11922.0191242927. The cubic root of 142134540 is about 521.8750600117.

Adding to 142134540 its reverse (45431241), we get a palindrome (187565781).

The spelling of 142134540 in words is "one hundred forty-two million, one hundred thirty-four thousand, five hundred forty".