145021330 has 8 divisors (see below), whose sum is σ = 261038412. Its totient is φ = 58008528.

The previous prime is 145021313. The next prime is 145021333. The reversal of 145021330 is 33120541.

It can be written as a sum of positive squares in 2 ways, for example, as 140351409 + 4669921 = 11847^2 + 2161^2 .

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 = 145021298 and 145021307.

It is not an unprimeable number, because it can be changed into a prime (145021333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7251057 + ... + 7251076.

Almost surely, 2^145021330 is an apocalyptic number.

145021330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145021330 is a deficient number, since it is larger than the sum of its proper divisors (116017082).

145021330 is a wasteful number, since it uses less digits than its factorization.

145021330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14502140.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 145021330 is about 12042.4802262657. The cubic root of 145021330 is about 525.3845466826.

Adding to 145021330 its reverse (33120541), we get a palindrome (178141871).

The spelling of 145021330 in words is "one hundred forty-five million, twenty-one thousand, three hundred thirty".