145021022 has 4 divisors (see below), whose sum is σ = 217531536. Its totient is φ = 72510510.

The previous prime is 145021021. The next prime is 145021039. The reversal of 145021022 is 220120541.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145021021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36255254 + ... + 36255257.

It is an arithmetic number, because the mean of its divisors is an integer number (54382884).

Almost surely, 2^145021022 is an apocalyptic number.

145021022 is a deficient number, since it is larger than the sum of its proper divisors (72510514).

145021022 is an equidigital number, since it uses as much as digits as its factorization.

145021022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72510513.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 145021022 is about 12042.4674381955. The cubic root of 145021022 is about 525.3841747407.

Adding to 145021022 its reverse (220120541), we get a palindrome (365141563).

The spelling of 145021022 in words is "one hundred forty-five million, twenty-one thousand, twenty-two".