1545385242 has 8 divisors (see below), whose sum is σ = 3090770496. Its totient is φ = 515128412.

The previous prime is 1545385241. The next prime is 1545385291. The reversal of 1545385242 is 2425835451.

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

1545385242 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 1545385242.

It is not an unprimeable number, because it can be changed into a prime (1545385241) 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, 128782098 + ... + 128782109.

It is an arithmetic number, because the mean of its divisors is an integer number (386346312).

Almost surely, 2^1545385242 is an apocalyptic number.

1545385242 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1545385242 is a wasteful number, since it uses less digits than its factorization.

1545385242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257564212.

The product of its digits is 192000, while the sum is 39.

The square root of 1545385242 is about 39311.3881973150. The cubic root of 1545385242 is about 1156.1448620758.

The spelling of 1545385242 in words is "one billion, five hundred forty-five million, three hundred eighty-five thousand, two hundred forty-two".