1542068873 has 4 divisors (see below), whose sum is σ = 1543616580. Its totient is φ = 1540521168.

The previous prime is 1542068839. The next prime is 1542068893. The reversal of 1542068873 is 3788602451.

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 769951504 + 772117369 = 27748^2 + 27787^2 .

It is a cyclic number.

It is not a de Polignac number, because 1542068873 - 2⁸ = 1542068617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1542068893) 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, 772358 + ... + 774351.

It is an arithmetic number, because the mean of its divisors is an integer number (385904145).

Almost surely, 2^1542068873 is an apocalyptic number.

It is an amenable number.

1542068873 is a deficient number, since it is larger than the sum of its proper divisors (1547707).

1542068873 is an equidigital number, since it uses as much as digits as its factorization.

1542068873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1547706.

The product of its (nonzero) digits is 322560, while the sum is 44.

The square root of 1542068873 is about 39269.1847763612. The cubic root of 1542068873 is about 1155.3172477350.

The spelling of 1542068873 in words is "one billion, five hundred forty-two million, sixty-eight thousand, eight hundred seventy-three".