4020787123 has 8 divisors (see below), whose sum is σ = 4097508080. Its totient is φ = 3944414880.

The previous prime is 4020787117. The next prime is 4020787189. The reversal of 4020787123 is 3217870204.

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

It is a cyclic number.

It is not a de Polignac number, because 4020787123 - 2⁵ = 4020787091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4020787193) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63840 + ... + 110077.

It is an arithmetic number, because the mean of its divisors is an integer number (512188510).

Almost surely, 2^4020787123 is an apocalyptic number.

4020787123 is a deficient number, since it is larger than the sum of its proper divisors (76720957).

4020787123 is a wasteful number, since it uses less digits than its factorization.

4020787123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174357.

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 4020787123 is about 63409.6768876802. The cubic root of 4020787123 is about 1590.1460940612.

The spelling of 4020787123 in words is "four billion, twenty million, seven hundred eighty-seven thousand, one hundred twenty-three".