4000631142 has 64 divisors (see below), whose sum is σ = 8580369600. Its totient is φ = 1241049600.

The previous prime is 4000631111. The next prime is 4000631143. The reversal of 4000631142 is 2411360004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4000631143) 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, 698892 + ... + 704592.

It is an arithmetic number, because the mean of its divisors is an integer number (134068275).

Almost surely, 2^4000631142 is an apocalyptic number.

4000631142 is an abundant number, since it is smaller than the sum of its proper divisors (4579738458).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4000631142 is a wasteful number, since it uses less digits than its factorization.

4000631142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5881.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 4000631142 is about 63250.5426221783. The cubic root of 4000631142 is about 1587.4845372003.

Adding to 4000631142 its reverse (2411360004), we get a palindrome (6411991146).

The spelling of 4000631142 in words is "four billion, six hundred thirty-one thousand, one hundred forty-two".