1543355145242 has 8 divisors (see below), whose sum is σ = 2338899034836. Its totient is φ = 763722133632.

The previous prime is 1543355145139. The next prime is 1543355145259. The reversal of 1543355145242 is 2425415533451.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1509946982401 + 33408162841 = 1228799^2 + 182779^2 .

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 = 1543355145193 and 1543355145202.

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, 3977719253 + ... + 3977719640.

Almost surely, 2^{1543355145242} is an apocalyptic number.

1543355145242 is a deficient number, since it is larger than the sum of its proper divisors (795543889594).

1543355145242 is an equidigital number, since it uses as much as digits as its factorization.

1543355145242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7955438992.

The product of its digits is 1440000, while the sum is 44.

The spelling of 1543355145242 in words is "one trillion, five hundred forty-three billion, three hundred fifty-five million, one hundred forty-five thousand, two hundred forty-two".