345002021 has 8 divisors (see below), whose sum is σ = 424617984. Its totient is φ = 272968560.

The previous prime is 345002017. The next prime is 345002083. The reversal of 345002021 is 120200543.

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

It is a cyclic number.

It is not a de Polignac number, because 345002021 - 2² = 345002017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345002521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1895525 + ... + 1895706.

It is an arithmetic number, because the mean of its divisors is an integer number (53077248).

Almost surely, 2^345002021 is an apocalyptic number.

It is an amenable number.

345002021 is a deficient number, since it is larger than the sum of its proper divisors (79615963).

345002021 is a wasteful number, since it uses less digits than its factorization.

345002021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3791251.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 345002021 is about 18574.2300244182. The cubic root of 345002021 is about 701.3592778587.

Adding to 345002021 its reverse (120200543), we get a palindrome (465202564).

The spelling of 345002021 in words is "three hundred forty-five million, two thousand, twenty-one".