342240140 has 24 divisors (see below), whose sum is σ = 784041552. Its totient is φ = 124450880.

The previous prime is 342240097. The next prime is 342240149. The reversal of 342240140 is 41042243.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (342240149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 777599 + ... + 778038.

It is an arithmetic number, because the mean of its divisors is an integer number (32668398).

Almost surely, 2^342240140 is an apocalyptic number.

It is an amenable number.

342240140 is an abundant number, since it is smaller than the sum of its proper divisors (441801412).

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

342240140 is a wasteful number, since it uses less digits than its factorization.

342240140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1555657 (or 1555655 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 342240140 is about 18499.7335115942. The cubic root of 342240140 is about 699.4827062541.

Adding to 342240140 its reverse (41042243), we get a palindrome (383282383).

The spelling of 342240140 in words is "three hundred forty-two million, two hundred forty thousand, one hundred forty".