342643140 has 72 divisors (see below), whose sum is σ = 1187833920. Its totient is φ = 78318144.

The previous prime is 342643127. The next prime is 342643141. The reversal of 342643140 is 41346243.

342643140 is a `hidden beast` number, since 3 + 4 + 2 + 643 + 14 + 0 = 666.

It is not an unprimeable number, because it can be changed into a prime (342643141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 134710 + ... + 137229.

Almost surely, 2^342643140 is an apocalyptic number.

342643140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

342643140 is an abundant number, since it is smaller than the sum of its proper divisors (845190780).

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

342643140 is a wasteful number, since it uses less digits than its factorization.

342643140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271961 (or 271956 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 342643140 is about 18510.6223558259. The cubic root of 342643140 is about 699.7571538561.

Adding to 342643140 its reverse (41346243), we get a palindrome (383989383).

The spelling of 342643140 in words is "three hundred forty-two million, six hundred forty-three thousand, one hundred forty".