405742346 has 16 divisors (see below), whose sum is σ = 617047200. Its totient is φ = 200068848.

The previous prime is 405742331. The next prime is 405742373. The reversal of 405742346 is 643247504.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107540 + ... + 111248.

It is an arithmetic number, because the mean of its divisors is an integer number (38565450).

Almost surely, 2^405742346 is an apocalyptic number.

405742346 is a deficient number, since it is larger than the sum of its proper divisors (211304854).

405742346 is a wasteful number, since it uses less digits than its factorization.

405742346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4453.

The product of its (nonzero) digits is 80640, while the sum is 35.

The square root of 405742346 is about 20143.0470882635. The cubic root of 405742346 is about 740.3153914909.

The spelling of 405742346 in words is "four hundred five million, seven hundred forty-two thousand, three hundred forty-six".