15200454242 has 4 divisors (see below), whose sum is σ = 22800681366. Its totient is φ = 7600227120.

The previous prime is 15200454221. The next prime is 15200454251. The reversal of 15200454242 is 24245400251.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24245400251 = 23 ⋅1054147837.

It can be written as a sum of positive squares in only one way, i.e., 7750865521 + 7449588721 = 88039^2 + 86311^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3800113559 + ... + 3800113562.

Almost surely, 2^15200454242 is an apocalyptic number.

15200454242 is a deficient number, since it is larger than the sum of its proper divisors (7600227124).

15200454242 is an equidigital number, since it uses as much as digits as its factorization.

15200454242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7600227123.

The product of its (nonzero) digits is 12800, while the sum is 29.

Adding to 15200454242 its reverse (24245400251), we get a palindrome (39445854493).

The spelling of 15200454242 in words is "fifteen billion, two hundred million, four hundred fifty-four thousand, two hundred forty-two".