345990442 has 32 divisors (see below), whose sum is σ = 613638144. Its totient is φ = 143175600.

The previous prime is 345990401. The next prime is 345990481. The reversal of 345990442 is 244099543.

It is a junction number, because it is equal to n+sod(n) for n = 345990395 and 345990404.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 351483 + ... + 352465.

It is an arithmetic number, because the mean of its divisors is an integer number (19176192).

Almost surely, 2^345990442 is an apocalyptic number.

345990442 is a deficient number, since it is larger than the sum of its proper divisors (267647702).

345990442 is a wasteful number, since it uses less digits than its factorization.

345990442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1834.

The product of its (nonzero) digits is 155520, while the sum is 40.

The square root of 345990442 is about 18600.8183153323. The cubic root of 345990442 is about 702.0284307065.

The spelling of 345990442 in words is "three hundred forty-five million, nine hundred ninety thousand, four hundred forty-two".