5156621242 has 8 divisors (see below), whose sum is σ = 8142033600. Its totient is φ = 2442610044.

The previous prime is 5156621233. The next prime is 5156621243. The reversal of 5156621242 is 2421266515.

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 = 5156621198 and 5156621207.

It is not an unprimeable number, because it can be changed into a prime (5156621243) 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, 67850242 + ... + 67850317.

It is an arithmetic number, because the mean of its divisors is an integer number (1017754200).

Almost surely, 2^5156621242 is an apocalyptic number.

5156621242 is a deficient number, since it is larger than the sum of its proper divisors (2985412358).

5156621242 is a wasteful number, since it uses less digits than its factorization.

5156621242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135700580.

The product of its digits is 28800, while the sum is 34.

The square root of 5156621242 is about 71809.6180326842. The cubic root of 5156621242 is about 1727.6472681537.

Adding to 5156621242 its reverse (2421266515), we get a palindrome (7577887757).

The spelling of 5156621242 in words is "five billion, one hundred fifty-six million, six hundred twenty-one thousand, two hundred forty-two".