20124345 has 16 divisors (see below), whose sum is σ = 34093440. Its totient is φ = 10101504.

The previous prime is 20124331. The next prime is 20124353. The reversal of 20124345 is 54342102.

It is not a de Polignac number, because 20124345 - 2⁴ = 20124329 is a prime.

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, 39205 + ... + 39714.

It is an arithmetic number, because the mean of its divisors is an integer number (2130840).

Almost surely, 2^20124345 is an apocalyptic number.

It is an amenable number.

20124345 is a deficient number, since it is larger than the sum of its proper divisors (13969095).

20124345 is a wasteful number, since it uses less digits than its factorization.

20124345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78944.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 20124345 is about 4486.0166071917. The cubic root of 20124345 is about 272.0031402824.

Adding to 20124345 its reverse (54342102), we get a palindrome (74466447).

The spelling of 20124345 in words is "twenty million, one hundred twenty-four thousand, three hundred forty-five".