4020240385 has 8 divisors (see below), whose sum is σ = 5513472576. Its totient is φ = 2756736240.

The previous prime is 4020240383. The next prime is 4020240421. The reversal of 4020240385 is 5830420204.

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

It is not a de Polignac number, because 4020240385 - 2¹ = 4020240383 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4020240383) 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, 57431971 + ... + 57432040.

It is an arithmetic number, because the mean of its divisors is an integer number (689184072).

It is a Proth number, since it is equal to 1917 ⋅ 2²¹ + 1 and 1917 < 2²¹.

Almost surely, 2^4020240385 is an apocalyptic number.

It is an amenable number.

4020240385 is a deficient number, since it is larger than the sum of its proper divisors (1493232191).

4020240385 is a wasteful number, since it uses less digits than its factorization.

4020240385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114864023.

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 4020240385 is about 63405.3655852563. The cubic root of 4020240385 is about 1590.0740159102.

Adding to 4020240385 its reverse (5830420204), we get a palindrome (9850660589).

The spelling of 4020240385 in words is "four billion, twenty million, two hundred forty thousand, three hundred eighty-five".