345124021 has 8 divisors (see below), whose sum is σ = 398646144. Its totient is φ = 295293120.

The previous prime is 345124009. The next prime is 345124051. The reversal of 345124021 is 120421543.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-345124021 is a prime.

It is a super-2 number, since 2×345124021² = 238221179742416882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 345123983 and 345124001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345124001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 922605 + ... + 922978.

It is an arithmetic number, because the mean of its divisors is an integer number (49830768).

Almost surely, 2^345124021 is an apocalyptic number.

It is an amenable number.

345124021 is a deficient number, since it is larger than the sum of its proper divisors (53522123).

345124021 is a wasteful number, since it uses less digits than its factorization.

345124021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1845611.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 345124021 is about 18577.5138541194. The cubic root of 345124021 is about 701.4419399329.

Adding to 345124021 its reverse (120421543), we get a palindrome (465545564).

It can be divided in two parts, 3451 and 24021, that added together give a palindrome (27472).

The spelling of 345124021 in words is "three hundred forty-five million, one hundred twenty-four thousand, twenty-one".