1542205223402 has 4 divisors (see below), whose sum is σ = 2313307835106. Its totient is φ = 771102611700.

The previous prime is 1542205223401. The next prime is 1542205223431. The reversal of 1542205223402 is 2043225022451.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1463497482001 + 78707741401 = 1209751^2 + 280549^2 .

It is not an unprimeable number, because it can be changed into a prime (1542205223401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 385551305849 + ... + 385551305852.

Almost surely, 2^{1542205223402} is an apocalyptic number.

1542205223402 is a deficient number, since it is larger than the sum of its proper divisors (771102611704).

1542205223402 is an equidigital number, since it uses as much as digits as its factorization.

1542205223402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771102611703.

The product of its (nonzero) digits is 38400, while the sum is 32.

The spelling of 1542205223402 in words is "one trillion, five hundred forty-two billion, two hundred five million, two hundred twenty-three thousand, four hundred two".