142042340 has 24 divisors (see below), whose sum is σ = 325406592. Its totient is φ = 51651680.

The previous prime is 142042339. The next prime is 142042357. The reversal of 142042340 is 43240241.

142042340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 322604 + ... + 323043.

It is an arithmetic number, because the mean of its divisors is an integer number (13558608).

Almost surely, 2^142042340 is an apocalyptic number.

142042340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142042340 is an abundant number, since it is smaller than the sum of its proper divisors (183364252).

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

142042340 is a wasteful number, since it uses less digits than its factorization.

142042340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645667 (or 645665 counting only the distinct ones).

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

The square root of 142042340 is about 11918.1517023404. The cubic root of 142042340 is about 521.7621920946.

Adding to 142042340 its reverse (43240241), we get a palindrome (185282581).

The spelling of 142042340 in words is "one hundred forty-two million, forty-two thousand, three hundred forty".