5642416138 has 4 divisors (see below), whose sum is σ = 8463624210. Its totient is φ = 2821208068.

The previous prime is 5642416049. The next prime is 5642416139. The reversal of 5642416138 is 8316142465.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 4666665969 + 975750169 = 68313^2 + 31237^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 5642416138.

It is not an unprimeable number, because it can be changed into a prime (5642416139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1410604033 + ... + 1410604036.

Almost surely, 2^5642416138 is an apocalyptic number.

5642416138 is a deficient number, since it is larger than the sum of its proper divisors (2821208072).

5642416138 is a wasteful number, since it uses less digits than its factorization.

5642416138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2821208071.

The product of its digits is 138240, while the sum is 40.

The square root of 5642416138 is about 75116.0178523862. The cubic root of 5642416138 is about 1780.2802380392.

The spelling of 5642416138 in words is "five billion, six hundred forty-two million, four hundred sixteen thousand, one hundred thirty-eight".