142304140 has 24 divisors (see below), whose sum is σ = 326006352. Its totient is φ = 51746880.

The previous prime is 142304137. The next prime is 142304143. The reversal of 142304140 is 41403241.

142304140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (142304137) and next prime (142304143).

It is a super-2 number, since 2×142304140² = 40500936522279200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (142304143) 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, 323199 + ... + 323638.

It is an arithmetic number, because the mean of its divisors is an integer number (13583598).

Almost surely, 2^142304140 is an apocalyptic number.

142304140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142304140 is an abundant number, since it is smaller than the sum of its proper divisors (183702212).

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

142304140 is a wasteful number, since it uses less digits than its factorization.

142304140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646857 (or 646855 counting only the distinct ones).

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

The square root of 142304140 is about 11929.1298928296. The cubic root of 142304140 is about 522.0825508136.

Adding to 142304140 its reverse (41403241), we get a palindrome (183707381).

The spelling of 142304140 in words is "one hundred forty-two million, three hundred four thousand, one hundred forty".