345642543 has 12 divisors (see below), whose sum is σ = 502855080. Its totient is φ = 228769776.

The previous prime is 345642541. The next prime is 345642553. The reversal of 345642543 is 345246543.

345642543 is a `hidden beast` number, since 3 + 4 + 5 + 642 + 5 + 4 + 3 = 666.

It is not a de Polignac number, because 345642543 - 2¹ = 345642541 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 345642498 and 345642507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345642541) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 136896 + ... + 139397.

It is an arithmetic number, because the mean of its divisors is an integer number (41904590).

Almost surely, 2^345642543 is an apocalyptic number.

345642543 is a deficient number, since it is larger than the sum of its proper divisors (157212537).

345642543 is a wasteful number, since it uses less digits than its factorization.

345642543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276438 (or 276435 counting only the distinct ones).

The product of its digits is 172800, while the sum is 36.

The square root of 345642543 is about 18591.4642511019. The cubic root of 345642543 is about 701.7930514726.

The spelling of 345642543 in words is "three hundred forty-five million, six hundred forty-two thousand, five hundred forty-three".