1542340385 has 8 divisors (see below), whose sum is σ = 1959679656. Its totient is φ = 1161291520.

The previous prime is 1542340381. The next prime is 1542340441. The reversal of 1542340385 is 5830432451.

It can be written as a sum of positive squares in 4 ways, for example, as 21418384 + 1520922001 = 4628^2 + 38999^2 .

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

It is not a de Polignac number, because 1542340385 - 2² = 1542340381 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1542340381) 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 in 7 ways as a sum of consecutive naturals, for example, 9072506 + ... + 9072675.

It is an arithmetic number, because the mean of its divisors is an integer number (244959957).

Almost surely, 2^1542340385 is an apocalyptic number.

It is an amenable number.

1542340385 is a deficient number, since it is larger than the sum of its proper divisors (417339271).

1542340385 is a wasteful number, since it uses less digits than its factorization.

1542340385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18145203.

The product of its (nonzero) digits is 57600, while the sum is 35.

The square root of 1542340385 is about 39272.6416860389. The cubic root of 1542340385 is about 1155.3850493086.

The spelling of 1542340385 in words is "one billion, five hundred forty-two million, three hundred forty thousand, three hundred eighty-five".