151205105242 has 32 divisors (see below), whose sum is σ = 237495402000. Its totient is φ = 72121840128.

The previous prime is 151205105231. The next prime is 151205105243. The reversal of 151205105242 is 242501502151.

It can be written as a sum of positive squares in 8 ways, for example, as 60333605641 + 90871499601 = 245629^2 + 301449^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 151205105242.

It is not an unprimeable number, because it can be changed into a prime (151205105243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6062734 + ... + 6087622.

Almost surely, 2^151205105242 is an apocalyptic number.

151205105242 is a deficient number, since it is larger than the sum of its proper divisors (86290296758).

151205105242 is a wasteful number, since it uses less digits than its factorization.

151205105242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26530.

The product of its (nonzero) digits is 4000, while the sum is 28.

Adding to 151205105242 its reverse (242501502151), we get a palindrome (393706607393).

The spelling of 151205105242 in words is "one hundred fifty-one billion, two hundred five million, one hundred five thousand, two hundred forty-two".