145232141 has 4 divisors (see below), whose sum is σ = 149157372. Its totient is φ = 141306912.

The previous prime is 145232111. The next prime is 145232147. The reversal of 145232141 is 141232541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 141232541 = 131 ⋅1078111.

It can be written as a sum of positive squares in 2 ways, for example, as 132480100 + 12752041 = 11510^2 + 3571^2 .

It is a cyclic number.

It is not a de Polignac number, because 145232141 - 2²² = 141037837 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145232147) 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, 1962560 + ... + 1962633.

It is an arithmetic number, because the mean of its divisors is an integer number (37289343).

Almost surely, 2^145232141 is an apocalyptic number.

It is an amenable number.

145232141 is a deficient number, since it is larger than the sum of its proper divisors (3925231).

145232141 is an equidigital number, since it uses as much as digits as its factorization.

145232141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3925230.

The product of its digits is 960, while the sum is 23.

The square root of 145232141 is about 12051.2298542514. The cubic root of 145232141 is about 525.6389994070.

Adding to 145232141 its reverse (141232541), we get a palindrome (286464682).

The spelling of 145232141 in words is "one hundred forty-five million, two hundred thirty-two thousand, one hundred forty-one".