1542202271 has 2 divisors, whose sum is σ = 1542202272. Its totient is φ = 1542202270.

The previous prime is 1542202261. The next prime is 1542202309. The reversal of 1542202271 is 1722022451.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1542202271 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1542202271.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1542202261) 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 as a sum of consecutive naturals, namely, 771101135 + 771101136.

It is an arithmetic number, because the mean of its divisors is an integer number (771101136).

Almost surely, 2^1542202271 is an apocalyptic number.

1542202271 is a deficient number, since it is larger than the sum of its proper divisors (1).

1542202271 is an equidigital number, since it uses as much as digits as its factorization.

1542202271 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 1542202271 is about 39270.8832470063. The cubic root of 1542202271 is about 1155.3505606800.

The spelling of 1542202271 in words is "one billion, five hundred forty-two million, two hundred two thousand, two hundred seventy-one".