145322035421 has 4 divisors (see below), whose sum is σ = 145345046652. Its totient is φ = 145299024192.

The previous prime is 145322035387. The next prime is 145322035427. The reversal of 145322035421 is 124530223541.

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

It can be written as a sum of positive squares in 2 ways, for example, as 107230706521 + 38091328900 = 327461^2 + 195170^2 .

It is a cyclic number.

It is not a de Polignac number, because 145322035421 - 2³⁴ = 128142166237 is a prime.

It is a super-2 number, since 2×145322035421² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145322035427) 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, 11496140 + ... + 11508773.

It is an arithmetic number, because the mean of its divisors is an integer number (36336261663).

Almost surely, 2^145322035421 is an apocalyptic number.

It is an amenable number.

145322035421 is a deficient number, since it is larger than the sum of its proper divisors (23011231).

145322035421 is an equidigital number, since it uses as much as digits as its factorization.

145322035421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23011230.

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 145322035421 its reverse (124530223541), we get a palindrome (269852258962).

The spelling of 145322035421 in words is "one hundred forty-five billion, three hundred twenty-two million, thirty-five thousand, four hundred twenty-one".