145940141 has 4 divisors (see below), whose sum is σ = 146906784. Its totient is φ = 144973500.

The previous prime is 145940107. The next prime is 145940149. The reversal of 145940141 is 141049541.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145940141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145940149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 483095 + ... + 483396.

It is an arithmetic number, because the mean of its divisors is an integer number (36726696).

Almost surely, 2^145940141 is an apocalyptic number.

It is an amenable number.

145940141 is a deficient number, since it is larger than the sum of its proper divisors (966643).

145940141 is an equidigital number, since it uses as much as digits as its factorization.

145940141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 966642.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 145940141 is about 12080.5687366117. The cubic root of 145940141 is about 526.4917704709.

Adding to 145940141 its reverse (141049541), we get a palindrome (286989682).

The spelling of 145940141 in words is "one hundred forty-five million, nine hundred forty thousand, one hundred forty-one".