1542401111 has 2 divisors, whose sum is σ = 1542401112. Its totient is φ = 1542401110.

The previous prime is 1542401101. The next prime is 1542401117. The reversal of 1542401111 is 1111042451.

It is a strong prime.

It is an emirp because it is prime and its reverse (1111042451) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1542401111 - 2¹⁰ = 1542400087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1542401117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 771200555 + 771200556.

It is an arithmetic number, because the mean of its divisors is an integer number (771200556).

Almost surely, 2^1542401111 is an apocalyptic number.

1542401111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1542401111 is an equidigital number, since it uses as much as digits as its factorization.

1542401111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 160, while the sum is 20.

The square root of 1542401111 is about 39273.4148120583. The cubic root of 1542401111 is about 1155.4002126263.

Adding to 1542401111 its reverse (1111042451), we get a palindrome (2653443562).

The spelling of 1542401111 in words is "one billion, five hundred forty-two million, four hundred one thousand, one hundred eleven".