1542342555541 has 4 divisors (see below), whose sum is σ = 1542864148812. Its totient is φ = 1541820962272.

The previous prime is 1542342555443. The next prime is 1542342555571. The reversal of 1542342555541 is 1455552432451.

It is a happy number.

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 225634500100 + 1316708055441 = 475010^2 + 1147479^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1542342555541 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1542342555491 and 1542342555500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1542342555571) 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, 260792200 + ... + 260798113.

It is an arithmetic number, because the mean of its divisors is an integer number (385716037203).

Almost surely, 2^{1542342555541} is an apocalyptic number.

It is an amenable number.

1542342555541 is a deficient number, since it is larger than the sum of its proper divisors (521593271).

1542342555541 is an equidigital number, since it uses as much as digits as its factorization.

1542342555541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521593270.

The product of its digits is 2400000, while the sum is 46.

Adding to 1542342555541 its reverse (1455552432451), we get a palindrome (2997894987992).

The spelling of 1542342555541 in words is "one trillion, five hundred forty-two billion, three hundred forty-two million, five hundred fifty-five thousand, five hundred forty-one".