142620040 has 32 divisors (see below), whose sum is σ = 322704000. Its totient is φ = 56726464.

The previous prime is 142620029. The next prime is 142620047. The reversal of 142620040 is 40026241.

142620040 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (142620047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2800 + ... + 17119.

It is an arithmetic number, because the mean of its divisors is an integer number (10084500).

Almost surely, 2^142620040 is an apocalyptic number.

142620040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142620040 is an abundant number, since it is smaller than the sum of its proper divisors (180083960).

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

142620040 is a wasteful number, since it uses less digits than its factorization.

142620040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20109 (or 20105 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 142620040 is about 11942.3632502114. The cubic root of 142620040 is about 522.4685878111.

Adding to 142620040 its reverse (40026241), we get a palindrome (182646281).

The spelling of 142620040 in words is "one hundred forty-two million, six hundred twenty thousand, forty".