1542423220538 has 8 divisors (see below), whose sum is σ = 2435405085120. Its totient is φ = 730621525500.

The previous prime is 1542423220531. The next prime is 1542423220619. The reversal of 1542423220538 is 8350223242451.

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

It is a junction number, because it is equal to n+sod(n) for n = 1542423220495 and 1542423220504.

It is not an unprimeable number, because it can be changed into a prime (1542423220531) 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, 20295042338 + ... + 20295042413.

It is an arithmetic number, because the mean of its divisors is an integer number (304425635640).

Almost surely, 2^{1542423220538} is an apocalyptic number.

1542423220538 is a deficient number, since it is larger than the sum of its proper divisors (892981864582).

1542423220538 is a wasteful number, since it uses less digits than its factorization.

1542423220538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40590084772.

The product of its (nonzero) digits is 460800, while the sum is 41.

Adding to 1542423220538 its reverse (8350223242451), we get a palindrome (9892646462989).

The spelling of 1542423220538 in words is "one trillion, five hundred forty-two billion, four hundred twenty-three million, two hundred twenty thousand, five hundred thirty-eight".