1542423133 has 4 divisors (see below), whose sum is σ = 1559753820. Its totient is φ = 1525092448.

The previous prime is 1542423101. The next prime is 1542423137. The reversal of 1542423133 is 3313242451.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3313242451 = 4931 ⋅671921.

It can be written as a sum of positive squares in 2 ways, for example, as 669929689 + 872493444 = 25883^2 + 29538^2 .

It is a cyclic number.

It is not a de Polignac number, because 1542423133 - 2⁵ = 1542423101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1542423137) 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 3 ways as a sum of consecutive naturals, for example, 8665210 + ... + 8665387.

It is an arithmetic number, because the mean of its divisors is an integer number (389938455).

Almost surely, 2^1542423133 is an apocalyptic number.

It is an amenable number.

1542423133 is a deficient number, since it is larger than the sum of its proper divisors (17330687).

1542423133 is an equidigital number, since it uses as much as digits as its factorization.

1542423133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17330686.

The product of its digits is 8640, while the sum is 28.

The square root of 1542423133 is about 39273.6951788344. The cubic root of 1542423133 is about 1155.4057114342.

Adding to 1542423133 its reverse (3313242451), we get a palindrome (4855665584).

The spelling of 1542423133 in words is "one billion, five hundred forty-two million, four hundred twenty-three thousand, one hundred thirty-three".