142502140 has 48 divisors (see below), whose sum is σ = 327398400. Its totient is φ = 51670080.

The previous prime is 142502137. The next prime is 142502141. The reversal of 142502140 is 41205241.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142502141) 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, 101161 + ... + 102559.

It is an arithmetic number, because the mean of its divisors is an integer number (6820800).

Almost surely, 2^142502140 is an apocalyptic number.

142502140 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 142502140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163699200).

142502140 is an abundant number, since it is smaller than the sum of its proper divisors (184896260).

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

142502140 is a wasteful number, since it uses less digits than its factorization.

142502140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1882 (or 1880 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 142502140 is about 11937.4260207132. The cubic root of 142502140 is about 522.3245780624.

Adding to 142502140 its reverse (41205241), we get a palindrome (183707381).

The spelling of 142502140 in words is "one hundred forty-two million, five hundred two thousand, one hundred forty".