1542171023 has 2 divisors, whose sum is σ = 1542171024. Its totient is φ = 1542171022.

The previous prime is 1542170957. The next prime is 1542171047. The reversal of 1542171023 is 3201712451.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1542171023 - 2¹⁰ = 1542169999 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 1542170983 and 1542171001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1542171053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 771085511 + 771085512.

It is an arithmetic number, because the mean of its divisors is an integer number (771085512).

Almost surely, 2^1542171023 is an apocalyptic number.

1542171023 is a deficient number, since it is larger than the sum of its proper divisors (1).

1542171023 is an equidigital number, since it uses as much as digits as its factorization.

1542171023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 1542171023 is about 39270.4853929767. The cubic root of 1542171023 is about 1155.3427574152.

Adding to 1542171023 its reverse (3201712451), we get a palindrome (4743883474).

The spelling of 1542171023 in words is "one billion, five hundred forty-two million, one hundred seventy-one thousand, twenty-three".