1542220410145 has 4 divisors (see below), whose sum is σ = 1850664492180. Its totient is φ = 1233776328112.

The previous prime is 1542220410131. The next prime is 1542220410161. The reversal of 1542220410145 is 5410140222451.

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 887145469456 + 655074940689 = 941884^2 + 809367^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1542220410145 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154222041010 + ... + 154222041019.

It is an arithmetic number, because the mean of its divisors is an integer number (462666123045).

Almost surely, 2^{1542220410145} is an apocalyptic number.

It is an amenable number.

1542220410145 is a deficient number, since it is larger than the sum of its proper divisors (308444082035).

1542220410145 is an equidigital number, since it uses as much as digits as its factorization.

1542220410145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308444082034.

The product of its (nonzero) digits is 12800, while the sum is 31.

Adding to 1542220410145 its reverse (5410140222451), we get a palindrome (6952360632596).

The spelling of 1542220410145 in words is "one trillion, five hundred forty-two billion, two hundred twenty million, four hundred ten thousand, one hundred forty-five".