305342642 has 16 divisors (see below), whose sum is σ = 501239232. Its totient is φ = 138351120.

The previous prime is 305342617. The next prime is 305342659. The reversal of 305342642 is 246243503.

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, 14918 + ... + 28865.

It is an arithmetic number, because the mean of its divisors is an integer number (31327452).

Almost surely, 2^305342642 is an apocalyptic number.

305342642 is a deficient number, since it is larger than the sum of its proper divisors (195896590).

305342642 is a wasteful number, since it uses less digits than its factorization.

305342642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44113.

The product of its (nonzero) digits is 17280, while the sum is 29.

The square root of 305342642 is about 17474.0562549169. The cubic root of 305342642 is about 673.3835243985.

The spelling of 305342642 in words is "three hundred five million, three hundred forty-two thousand, six hundred forty-two".