405193442 has 8 divisors (see below), whose sum is σ = 608542032. Its totient is φ = 202346100.

The previous prime is 405193441. The next prime is 405193463. The reversal of 405193442 is 244391504.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×405193442³ (a number of 27 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 405193399 and 405193408.

It is not an unprimeable number, because it can be changed into a prime (405193441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123284 + ... + 126527.

It is an arithmetic number, because the mean of its divisors is an integer number (76067754).

Almost surely, 2^405193442 is an apocalyptic number.

405193442 is a deficient number, since it is larger than the sum of its proper divisors (203348590).

405193442 is a wasteful number, since it uses less digits than its factorization.

405193442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250624.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 405193442 is about 20129.4173288747. The cubic root of 405193442 is about 739.9813983637.

The spelling of 405193442 in words is "four hundred five million, one hundred ninety-three thousand, four hundred forty-two".