406120345 has 8 divisors (see below), whose sum is σ = 512994240. Its totient is φ = 307796400.

The previous prime is 406120333. The next prime is 406120381. The reversal of 406120345 is 543021604.

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

It is not a de Polignac number, because 406120345 - 2⁵ = 406120313 is a prime.

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, 2137381 + ... + 2137570.

It is an arithmetic number, because the mean of its divisors is an integer number (64124280).

Almost surely, 2^406120345 is an apocalyptic number.

It is an amenable number.

406120345 is a deficient number, since it is larger than the sum of its proper divisors (106873895).

406120345 is a wasteful number, since it uses less digits than its factorization.

406120345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4274975.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 406120345 is about 20152.4277693781. The cubic root of 406120345 is about 740.5452184768.

Adding to 406120345 its reverse (543021604), we get a palindrome (949141949).

The spelling of 406120345 in words is "four hundred six million, one hundred twenty thousand, three hundred forty-five".