145212041 has 16 divisors (see below), whose sum is σ = 171776640. Its totient is φ = 121461120.

The previous prime is 145211993. The next prime is 145212047. The reversal of 145212041 is 140212541.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 145212041 - 2¹⁸ = 144949897 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (145212047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7100 + ... + 18461.

It is an arithmetic number, because the mean of its divisors is an integer number (10736040).

Almost surely, 2^145212041 is an apocalyptic number.

It is an amenable number.

145212041 is a deficient number, since it is larger than the sum of its proper divisors (26564599).

145212041 is a wasteful number, since it uses less digits than its factorization.

145212041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25616.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 145212041 is about 12050.3958856131. The cubic root of 145212041 is about 525.6147489639.

Adding to 145212041 its reverse (140212541), we get a palindrome (285424582).

The spelling of 145212041 in words is "one hundred forty-five million, two hundred twelve thousand, forty-one".