4020345452 has 12 divisors (see below), whose sum is σ = 7140614040. Its totient is φ = 1980170016.

The previous prime is 4020345403. The next prime is 4020345457. The reversal of 4020345452 is 2545430204.

It is not an unprimeable number, because it can be changed into a prime (4020345457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7500377 + ... + 7500912.

It is an arithmetic number, because the mean of its divisors is an integer number (595051170).

Almost surely, 2^4020345452 is an apocalyptic number.

It is an amenable number.

4020345452 is a deficient number, since it is larger than the sum of its proper divisors (3120268588).

4020345452 is a wasteful number, since it uses less digits than its factorization.

4020345452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15001360 (or 15001358 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 29.

The square root of 4020345452 is about 63406.1941138246. The cubic root of 4020345452 is about 1590.0878677230.

Adding to 4020345452 its reverse (2545430204), we get a palindrome (6565775656).

The spelling of 4020345452 in words is "four billion, twenty million, three hundred forty-five thousand, four hundred fifty-two".