145542115 has 4 divisors (see below), whose sum is σ = 174650544. Its totient is φ = 116433688.

The previous prime is 145542101. The next prime is 145542139. The reversal of 145542115 is 511245541.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 145542115 - 2⁹ = 145541603 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14554207 + ... + 14554216.

It is an arithmetic number, because the mean of its divisors is an integer number (43662636).

Almost surely, 2^145542115 is an apocalyptic number.

145542115 is a deficient number, since it is larger than the sum of its proper divisors (29108429).

145542115 is an equidigital number, since it uses as much as digits as its factorization.

145542115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29108428.

The product of its digits is 4000, while the sum is 28.

The square root of 145542115 is about 12064.0836784233. The cubic root of 145542115 is about 526.0126968555.

Adding to 145542115 its reverse (511245541), we get a palindrome (656787656).

The spelling of 145542115 in words is "one hundred forty-five million, five hundred forty-two thousand, one hundred fifteen".