145121411 has 4 divisors (see below), whose sum is σ = 152759400. Its totient is φ = 137483424.

The previous prime is 145121387. The next prime is 145121461. The reversal of 145121411 is 114121541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 114121541 = 1013 ⋅112657.

It is a cyclic number.

It is not a de Polignac number, because 145121411 - 2¹⁰ = 145120387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145121461) 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, 3818966 + ... + 3819003.

It is an arithmetic number, because the mean of its divisors is an integer number (38189850).

Almost surely, 2^145121411 is an apocalyptic number.

145121411 is a deficient number, since it is larger than the sum of its proper divisors (7637989).

145121411 is an equidigital number, since it uses as much as digits as its factorization.

145121411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7637988.

The product of its digits is 160, while the sum is 20.

The square root of 145121411 is about 12046.6348413156. The cubic root of 145121411 is about 525.5053769997.

Adding to 145121411 its reverse (114121541), we get a palindrome (259242952).

The spelling of 145121411 in words is "one hundred forty-five million, one hundred twenty-one thousand, four hundred eleven".