345121442 has 8 divisors (see below), whose sum is σ = 520365036. Its totient is φ = 171666432.

The previous prime is 345121429. The next prime is 345121499. The reversal of 345121442 is 244121543.

It can be written as a sum of positive squares in 2 ways, for example, as 263055961 + 82065481 = 16219^2 + 9059^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 446663 + ... + 447434.

Almost surely, 2^345121442 is an apocalyptic number.

345121442 is a deficient number, since it is larger than the sum of its proper divisors (175243594).

345121442 is a wasteful number, since it uses less digits than its factorization.

345121442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 894292.

The product of its digits is 3840, while the sum is 26.

The square root of 345121442 is about 18577.4444421185. Note that the first 5 decimals coincide. The cubic root of 345121442 is about 701.4401927124.

Adding to 345121442 its reverse (244121543), we get a palindrome (589242985).

The spelling of 345121442 in words is "three hundred forty-five million, one hundred twenty-one thousand, four hundred forty-two".