145040422 has 4 divisors (see below), whose sum is σ = 217560636. Its totient is φ = 72520210.

The previous prime is 145040387. The next prime is 145040429. The reversal of 145040422 is 224040541.

It is a happy number.

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

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 145040393 and 145040402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145040429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36260104 + ... + 36260107.

It is an arithmetic number, because the mean of its divisors is an integer number (54390159).

Almost surely, 2^145040422 is an apocalyptic number.

145040422 is a deficient number, since it is larger than the sum of its proper divisors (72520214).

145040422 is an equidigital number, since it uses as much as digits as its factorization.

145040422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72520213.

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 145040422 is about 12043.2728940268. The cubic root of 145040422 is about 525.4076012260.

Adding to 145040422 its reverse (224040541), we get a palindrome (369080963).

The spelling of 145040422 in words is "one hundred forty-five million, forty thousand, four hundred twenty-two".