1542173871 has 16 divisors (see below), whose sum is σ = 2350611200. Its totient is φ = 881005248.

The previous prime is 1542173839. The next prime is 1542173873. The reversal of 1542173871 is 1783712451.

It is a happy number.

It is not a de Polignac number, because 1542173871 - 2⁵ = 1542173839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1542173873) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96960 + ... + 111738.

It is an arithmetic number, because the mean of its divisors is an integer number (146913200).

Almost surely, 2^1542173871 is an apocalyptic number.

1542173871 is a deficient number, since it is larger than the sum of its proper divisors (808437329).

1542173871 is a wasteful number, since it uses less digits than its factorization.

1542173871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19758.

The product of its digits is 47040, while the sum is 39.

The square root of 1542173871 is about 39270.5216542892. The cubic root of 1542173871 is about 1155.3434686234.

The spelling of 1542173871 in words is "one billion, five hundred forty-two million, one hundred seventy-three thousand, eight hundred seventy-one".