1542202423 has 2 divisors, whose sum is σ = 1542202424. Its totient is φ = 1542202422.

The previous prime is 1542202421. The next prime is 1542202429. The reversal of 1542202423 is 3242022451.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1542202423 - 2¹ = 1542202421 is a prime.

Together with 1542202421, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1542202421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 771101211 + 771101212.

It is an arithmetic number, because the mean of its divisors is an integer number (771101212).

Almost surely, 2^1542202423 is an apocalyptic number.

1542202423 is a deficient number, since it is larger than the sum of its proper divisors (1).

1542202423 is an equidigital number, since it uses as much as digits as its factorization.

1542202423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 1542202423 is about 39270.8851822823. The cubic root of 1542202423 is about 1155.3505986372.

Adding to 1542202423 its reverse (3242022451), we get a palindrome (4784224874).

The spelling of 1542202423 in words is "one billion, five hundred forty-two million, two hundred two thousand, four hundred twenty-three".