148400305 has 4 divisors (see below), whose sum is σ = 178080372. Its totient is φ = 118720240.

The previous prime is 148400299. The next prime is 148400311. The reversal of 148400305 is 503004841.

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

It is an interprime number because it is at equal distance from previous prime (148400299) and next prime (148400311).

It can be written as a sum of positive squares in 2 ways, for example, as 83887281 + 64513024 = 9159^2 + 8032^2 .

It is not a de Polignac number, because 148400305 - 2⁷ = 148400177 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 148400305.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14840026 + ... + 14840035.

It is an arithmetic number, because the mean of its divisors is an integer number (44520093).

Almost surely, 2^148400305 is an apocalyptic number.

It is an amenable number.

148400305 is a deficient number, since it is larger than the sum of its proper divisors (29680067).

148400305 is an equidigital number, since it uses as much as digits as its factorization.

148400305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29680066.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 148400305 is about 12181.9663847837. The cubic root of 148400305 is about 529.4337193667.

The spelling of 148400305 in words is "one hundred forty-eight million, four hundred thousand, three hundred five".