4428138542 has 4 divisors (see below), whose sum is σ = 6642207816. Its totient is φ = 2214069270.

The previous prime is 4428138541. The next prime is 4428138553. The reversal of 4428138542 is 2458318244.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 4428138542.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4428138541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1107034634 + ... + 1107034637.

It is an arithmetic number, because the mean of its divisors is an integer number (1660551954).

Almost surely, 2^4428138542 is an apocalyptic number.

4428138542 is a deficient number, since it is larger than the sum of its proper divisors (2214069274).

4428138542 is a wasteful number, since it uses less digits than its factorization.

4428138542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2214069273.

The product of its digits is 245760, while the sum is 41.

The square root of 4428138542 is about 66544.2600229351. The cubic root of 4428138542 is about 1642.1282282287.

The spelling of 4428138542 in words is "four billion, four hundred twenty-eight million, one hundred thirty-eight thousand, five hundred forty-two".