145542111 has 32 divisors (see below), whose sum is σ = 230307840. Its totient is φ = 80592000.

The previous prime is 145542101. The next prime is 145542139. The reversal of 145542111 is 111245541.

It is not a de Polignac number, because 145542111 - 2¹⁰ = 145541087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145542101) 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 31 ways as a sum of consecutive naturals, for example, 41650 + ... + 45008.

It is an arithmetic number, because the mean of its divisors is an integer number (7197120).

Almost surely, 2^145542111 is an apocalyptic number.

145542111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

145542111 is a deficient number, since it is larger than the sum of its proper divisors (84765729).

145542111 is a wasteful number, since it uses less digits than its factorization.

145542111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3487.

The product of its digits is 800, while the sum is 24.

The square root of 145542111 is about 12064.0835126420. The cubic root of 145542111 is about 526.0126920367.

Adding to 145542111 its reverse (111245541), we get a palindrome (256787652).

The spelling of 145542111 in words is "one hundred forty-five million, five hundred forty-two thousand, one hundred eleven".