142145040 has 80 divisors (see below), whose sum is σ = 441811008. Its totient is φ = 37805568.

The previous prime is 142145033. The next prime is 142145051. The reversal of 142145040 is 40541241.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 142144998 and 142145016.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156267 + ... + 157173.

Almost surely, 2^142145040 is an apocalyptic number.

142145040 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 142145040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (220905504).

142145040 is an abundant number, since it is smaller than the sum of its proper divisors (299665968).

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

142145040 is a wasteful number, since it uses less digits than its factorization.

142145040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1576 (or 1570 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 142145040 is about 11922.4594778091. The cubic root of 142145040 is about 521.8879106371.

Adding to 142145040 its reverse (40541241), we get a palindrome (182686281).

The spelling of 142145040 in words is "one hundred forty-two million, one hundred forty-five thousand, forty".