142009340 has 24 divisors (see below), whose sum is σ = 325330992. Its totient is φ = 51639680.

The previous prime is 142009339. The next prime is 142009369. The reversal of 142009340 is 43900241.

142009340 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 322529 + ... + 322968.

It is an arithmetic number, because the mean of its divisors is an integer number (13555458).

Almost surely, 2^142009340 is an apocalyptic number.

142009340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142009340 is an abundant number, since it is smaller than the sum of its proper divisors (183321652).

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

142009340 is a wasteful number, since it uses less digits than its factorization.

142009340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645517 (or 645515 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 142009340 is about 11916.7671790633. The cubic root of 142009340 is about 521.7217828149.

Adding to 142009340 its reverse (43900241), we get a palindrome (185909581).

The spelling of 142009340 in words is "one hundred forty-two million, nine thousand, three hundred forty".