4138931542 has 8 divisors (see below), whose sum is σ = 6208775496. Its totient is φ = 2069339712.

The previous prime is 4138931501. The next prime is 4138931543. The reversal of 4138931542 is 2451398314.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 4138931495 and 4138931504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4138931543) 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, 14523 + ... + 92134.

It is an arithmetic number, because the mean of its divisors is an integer number (776096937).

Almost surely, 2^4138931542 is an apocalyptic number.

4138931542 is a deficient number, since it is larger than the sum of its proper divisors (2069843954).

4138931542 is a wasteful number, since it uses less digits than its factorization.

4138931542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126062.

The product of its digits is 103680, while the sum is 40.

The square root of 4138931542 is about 64334.5283809557. The cubic root of 4138931542 is about 1605.5706270936.

The spelling of 4138931542 in words is "four billion, one hundred thirty-eight million, nine hundred thirty-one thousand, five hundred forty-two".