145542042241 has 4 divisors (see below), whose sum is σ = 145959068500. Its totient is φ = 145125015984.

The previous prime is 145542042227. The next prime is 145542042299. The reversal of 145542042241 is 142240245541.

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

It can be written as a sum of positive squares in 2 ways, for example, as 68799191616 + 76742850625 = 262296^2 + 277025^2 .

It is a cyclic number.

It is not a de Polignac number, because 145542042241 - 2¹³ = 145542034049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 145542042197 and 145542042206.

It is not an unprimeable number, because it can be changed into a prime (145542042221) 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, 208512606 + ... + 208513303.

It is an arithmetic number, because the mean of its divisors is an integer number (36489767125).

Almost surely, 2^145542042241 is an apocalyptic number.

It is an amenable number.

145542042241 is a deficient number, since it is larger than the sum of its proper divisors (417026259).

145542042241 is an equidigital number, since it uses as much as digits as its factorization.

145542042241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417026258.

The product of its (nonzero) digits is 51200, while the sum is 34.

Adding to 145542042241 its reverse (142240245541), we get a palindrome (287782287782).

The spelling of 145542042241 in words is "one hundred forty-five billion, five hundred forty-two million, forty-two thousand, two hundred forty-one".