146331145 has 8 divisors (see below), whose sum is σ = 178910856. Its totient is φ = 114855936.

The previous prime is 146331139. The next prime is 146331169. The reversal of 146331145 is 541133641.

It can be written as a sum of positive squares in 4 ways, for example, as 77158656 + 69172489 = 8784^2 + 8317^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 146331145 - 2³ = 146331137 is a prime.

It is a super-2 number, since 2×146331145² = 42825607994022050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 275832 + ... + 276361.

It is an arithmetic number, because the mean of its divisors is an integer number (22363857).

Almost surely, 2^146331145 is an apocalyptic number.

It is an amenable number.

146331145 is a deficient number, since it is larger than the sum of its proper divisors (32579711).

146331145 is an equidigital number, since it uses as much as digits as its factorization.

146331145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552251.

The product of its digits is 4320, while the sum is 28.

The square root of 146331145 is about 12096.7410900622. The cubic root of 146331145 is about 526.9615448418.

Adding to 146331145 its reverse (541133641), we get a palindrome (687464786).

The spelling of 146331145 in words is "one hundred forty-six million, three hundred thirty-one thousand, one hundred forty-five".