145301405 has 8 divisors (see below), whose sum is σ = 179074392. Its totient is φ = 113099328.

The previous prime is 145301347. The next prime is 145301413. The reversal of 145301405 is 504103541.

It can be written as a sum of positive squares in 4 ways, for example, as 27730756 + 117570649 = 5266^2 + 10843^2 .

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 145301405 - 2¹² = 145297309 is a prime.

It is a super-2 number, since 2×145301405² = 42224996589948050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent 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, 392522 + ... + 392891.

It is an arithmetic number, because the mean of its divisors is an integer number (22384299).

Almost surely, 2^145301405 is an apocalyptic number.

It is an amenable number.

145301405 is a deficient number, since it is larger than the sum of its proper divisors (33772987).

145301405 is an equidigital number, since it uses as much as digits as its factorization.

145301405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 785455.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 145301405 is about 12054.1032432944. The cubic root of 145301405 is about 525.7225485743.

Adding to 145301405 its reverse (504103541), we get a palindrome (649404946).

The spelling of 145301405 in words is "one hundred forty-five million, three hundred one thousand, four hundred five".