145144422 has 48 divisors (see below), whose sum is σ = 322066368. Its totient is φ = 47224320.

The previous prime is 145144411. The next prime is 145144427. The reversal of 145144422 is 224441541.

145144422 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145144427) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 336547 + ... + 336977.

It is an arithmetic number, because the mean of its divisors is an integer number (6709716).

Almost surely, 2^145144422 is an apocalyptic number.

145144422 is an abundant number, since it is smaller than the sum of its proper divisors (176921946).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145144422 is a wasteful number, since it uses less digits than its factorization.

145144422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 845 (or 842 counting only the distinct ones).

The product of its digits is 5120, while the sum is 27.

The square root of 145144422 is about 12047.5898834580. The cubic root of 145144422 is about 525.5331509054.

Adding to 145144422 its reverse (224441541), we get a palindrome (369585963).

The spelling of 145144422 in words is "one hundred forty-five million, one hundred forty-four thousand, four hundred twenty-two".