405342543 has 16 divisors (see below), whose sum is σ = 572888160. Its totient is φ = 254048256.

The previous prime is 405342527. The next prime is 405342557. The reversal of 405342543 is 345243504.

It is not a de Polignac number, because 405342543 - 2⁴ = 405342527 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 405342543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405342583) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47521 + ... + 55397.

It is an arithmetic number, because the mean of its divisors is an integer number (35805510).

Almost surely, 2^405342543 is an apocalyptic number.

405342543 is a deficient number, since it is larger than the sum of its proper divisors (167545617).

405342543 is a wasteful number, since it uses less digits than its factorization.

405342543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8906.

The product of its (nonzero) digits is 28800, while the sum is 30.

The square root of 405342543 is about 20133.1205479926. The cubic root of 405342543 is about 740.0721520833.

The spelling of 405342543 in words is "four hundred five million, three hundred forty-two thousand, five hundred forty-three".