145342004422 has 4 divisors (see below), whose sum is σ = 218013006636. Its totient is φ = 72671002210.

The previous prime is 145342004411. The next prime is 145342004443. The reversal of 145342004422 is 224400243541.

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

It is a super-2 number, since 2×145342004422² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36335501104 + ... + 36335501107.

It is an arithmetic number, because the mean of its divisors is an integer number (54503251659).

Almost surely, 2^145342004422 is an apocalyptic number.

145342004422 is a deficient number, since it is larger than the sum of its proper divisors (72671002214).

145342004422 is an equidigital number, since it uses as much as digits as its factorization.

145342004422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72671002213.

The product of its (nonzero) digits is 30720, while the sum is 31.

Adding to 145342004422 its reverse (224400243541), we get a palindrome (369742247963).

The spelling of 145342004422 in words is "one hundred forty-five billion, three hundred forty-two million, four thousand, four hundred twenty-two".