145020422 has 8 divisors (see below), whose sum is σ = 220151736. Its totient is φ = 71636512.

The previous prime is 145020409. The next prime is 145020437. The reversal of 145020422 is 224020541.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 145020394 and 145020403.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 436643 + ... + 436974.

It is an arithmetic number, because the mean of its divisors is an integer number (27518967).

Almost surely, 2^145020422 is an apocalyptic number.

145020422 is a deficient number, since it is larger than the sum of its proper divisors (75131314).

145020422 is an equidigital number, since it uses as much as digits as its factorization.

145020422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 873702.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 145020422 is about 12042.4425263316. The cubic root of 145020422 is about 525.3834501769.

Adding to 145020422 its reverse (224020541), we get a palindrome (369040963).

The spelling of 145020422 in words is "one hundred forty-five million, twenty thousand, four hundred twenty-two".