1542132899 has 16 divisors (see below), whose sum is σ = 1576723968. Its totient is φ = 1508078112.

The previous prime is 1542132881. The next prime is 1542132901. The reversal of 1542132899 is 9982312451.

It is a Cunningham number, because it is equal to 39270²-1.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1542132899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1542132829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4201814 + ... + 4202180.

It is an arithmetic number, because the mean of its divisors is an integer number (98545248).

Almost surely, 2^1542132899 is an apocalyptic number.

1542132899 is a deficient number, since it is larger than the sum of its proper divisors (34591069).

1542132899 is a wasteful number, since it uses less digits than its factorization.

1542132899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 874.

The product of its digits is 155520, while the sum is 44.

The square root of 1542132899 is about 39269.9999872676. Note that the first 4 decimals coincide. The cubic root of 1542132899 is about 1155.3332369298. Note that the first 3 decimals are identical.

The spelling of 1542132899 in words is "one billion, five hundred forty-two million, one hundred thirty-two thousand, eight hundred ninety-nine".