142140040 has 64 divisors (see below), whose sum is σ = 368064000. Its totient is φ = 48392448.

The previous prime is 142140029. The next prime is 142140041. The reversal of 142140040 is 40041241.

It is a junction number, because it is equal to n+sod(n) for n = 142139996 and 142140023.

It is not an unprimeable number, because it can be changed into a prime (142140041) 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 in 15 ways as a sum of consecutive naturals, for example, 40017 + ... + 43423.

It is an arithmetic number, because the mean of its divisors is an integer number (5751000).

Almost surely, 2^142140040 is an apocalyptic number.

142140040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142140040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (184032000).

142140040 is an abundant number, since it is smaller than the sum of its proper divisors (225923960).

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

142140040 is a wasteful number, since it uses less digits than its factorization.

142140040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3574 (or 3570 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 142140040 is about 11922.2497876869. The cubic root of 142140040 is about 521.8817913706.

Adding to 142140040 its reverse (40041241), we get a palindrome (182181281).

The spelling of 142140040 in words is "one hundred forty-two million, one hundred forty thousand, forty".