1542402317 has 2 divisors, whose sum is σ = 1542402318. Its totient is φ = 1542402316.

The previous prime is 1542402289. The next prime is 1542402319. The reversal of 1542402317 is 7132042451.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1298449156 + 243953161 = 36034^2 + 15619^2 .

It is an emirp because it is prime and its reverse (7132042451) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1542402317 - 2²⁶ = 1475293453 is a prime.

Together with 1542402319, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1542402317.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1542402319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 771201158 + 771201159.

It is an arithmetic number, because the mean of its divisors is an integer number (771201159).

Almost surely, 2^1542402317 is an apocalyptic number.

It is an amenable number.

1542402317 is a deficient number, since it is larger than the sum of its proper divisors (1).

1542402317 is an equidigital number, since it uses as much as digits as its factorization.

1542402317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 1542402317 is about 39273.4301659532. The cubic root of 1542402317 is about 1155.4005137612.

Adding to 1542402317 its reverse (7132042451), we get a palindrome (8674444768).

The spelling of 1542402317 in words is "one billion, five hundred forty-two million, four hundred two thousand, three hundred seventeen".