4020531406 has 8 divisors (see below), whose sum is σ = 6238755720. Its totient is φ = 1940946168.

The previous prime is 4020531401. The next prime is 4020531409. The reversal of 4020531406 is 6041350204.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4020531401) 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, 34659696 + ... + 34659811.

It is an arithmetic number, because the mean of its divisors is an integer number (779844465).

Almost surely, 2^4020531406 is an apocalyptic number.

4020531406 is a deficient number, since it is larger than the sum of its proper divisors (2218224314).

4020531406 is a wasteful number, since it uses less digits than its factorization.

4020531406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69319538.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 4020531406 is about 63407.6604678015. The cubic root of 4020531406 is about 1590.1123829165.

The spelling of 4020531406 in words is "four billion, twenty million, five hundred thirty-one thousand, four hundred six".