307421145 has 12 divisors (see below), whose sum is σ = 532863396. Its totient is φ = 163957920.

The previous prime is 307421143. The next prime is 307421161. The reversal of 307421145 is 541124703.

It can be written as a sum of positive squares in 2 ways, for example, as 56610576 + 250810569 = 7524^2 + 15837^2 .

It is not a de Polignac number, because 307421145 - 2¹ = 307421143 is a prime.

It is a super-2 number, since 2×307421145² = 189015520786222050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (307421143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3415746 + ... + 3415835.

It is an arithmetic number, because the mean of its divisors is an integer number (44405283).

Almost surely, 2^307421145 is an apocalyptic number.

It is an amenable number.

307421145 is a deficient number, since it is larger than the sum of its proper divisors (225442251).

307421145 is a wasteful number, since it uses less digits than its factorization.

307421145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6831592 (or 6831589 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 307421145 is about 17533.4293565178. The cubic root of 307421145 is about 674.9080039233.

Adding to 307421145 its reverse (541124703), we get a palindrome (848545848).

The spelling of 307421145 in words is "three hundred seven million, four hundred twenty-one thousand, one hundred forty-five".