142020340 has 48 divisors (see below), whose sum is σ = 371839104. Its totient is φ = 44265600.

The previous prime is 142020313. The next prime is 142020341. The reversal of 142020340 is 43020241.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142020341) 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, 44571 + ... + 47650.

It is an arithmetic number, because the mean of its divisors is an integer number (7746648).

Almost surely, 2^142020340 is an apocalyptic number.

142020340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142020340 is an abundant number, since it is smaller than the sum of its proper divisors (229818764).

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

142020340 is a wasteful number, since it uses less digits than its factorization.

142020340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92248 (or 92246 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 142020340 is about 11917.2287046947. The cubic root of 142020340 is about 521.7352532703.

Adding to 142020340 its reverse (43020241), we get a palindrome (185040581).

Subtracting from 142020340 its reverse (43020241), we obtain a palindrome (99000099).

The spelling of 142020340 in words is "one hundred forty-two million, twenty thousand, three hundred forty".