145142142241 has 8 divisors (see below), whose sum is σ = 156199259304. Its totient is φ = 134364952320.

The previous prime is 145142142227. The next prime is 145142142263. The reversal of 145142142241 is 142241241541.

It can be written as a sum of positive squares in 4 ways, for example, as 3363536016 + 141778606225 = 57996^2 + 376535^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 145142142241 - 2³¹ = 142994658593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145142149241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69980710 + ... + 69982783.

It is an arithmetic number, because the mean of its divisors is an integer number (19524907413).

Almost surely, 2^145142142241 is an apocalyptic number.

It is an amenable number.

145142142241 is a deficient number, since it is larger than the sum of its proper divisors (11057117063).

145142142241 is a wasteful number, since it uses less digits than its factorization.

145142142241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139963571.

The product of its digits is 10240, while the sum is 31.

Adding to 145142142241 its reverse (142241241541), we get a palindrome (287383383782).

The spelling of 145142142241 in words is "one hundred forty-five billion, one hundred forty-two million, one hundred forty-two thousand, two hundred forty-one".