4000042140 has 48 divisors (see below), whose sum is σ = 11203684128. Its totient is φ = 1066338304.

The previous prime is 4000042133. The next prime is 4000042147. The reversal of 4000042140 is 412400004.

It is an interprime number because it is at equal distance from previous prime (4000042133) and next prime (4000042147).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4000042147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 221284 + ... + 238676.

It is an arithmetic number, because the mean of its divisors is an integer number (233410086).

Almost surely, 2^4000042140 is an apocalyptic number.

It is an amenable number.

4000042140 is an abundant number, since it is smaller than the sum of its proper divisors (7203641988).

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

4000042140 is a wasteful number, since it uses less digits than its factorization.

4000042140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21238 (or 21236 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 4000042140 is about 63245.8863484417. The cubic root of 4000042140 is about 1587.4066263720.

Adding to 4000042140 its reverse (412400004), we get a palindrome (4412442144).

The spelling of 4000042140 in words is "four billion, forty-two thousand, one hundred forty".