4020423245 has 32 divisors (see below), whose sum is σ = 5237540352. Its totient is φ = 2950843392.

The previous prime is 4020423229. The next prime is 4020423247. The reversal of 4020423245 is 5423240204.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 4020423245 - 2⁴ = 4020423229 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4020423247) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2824604 + ... + 2826026.

It is an arithmetic number, because the mean of its divisors is an integer number (163673136).

Almost surely, 2^4020423245 is an apocalyptic number.

It is an amenable number.

4020423245 is a deficient number, since it is larger than the sum of its proper divisors (1217117107).

4020423245 is a wasteful number, since it uses less digits than its factorization.

4020423245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2261.

The product of its (nonzero) digits is 7680, while the sum is 26.

The square root of 4020423245 is about 63406.8075603874. The cubic root of 4020423245 is about 1590.0981236333.

Adding to 4020423245 its reverse (5423240204), we get a palindrome (9443663449).

The spelling of 4020423245 in words is "four billion, twenty million, four hundred twenty-three thousand, two hundred forty-five".