302212145 has 16 divisors (see below), whose sum is σ = 384970320. Its totient is φ = 226965504.

The previous prime is 302212093. The next prime is 302212147. The reversal of 302212145 is 541212203.

It can be written as a sum of positive squares in 8 ways, for example, as 529984 + 301682161 = 728^2 + 17369^2 .

It is not a de Polignac number, because 302212145 - 2¹⁶ = 302146609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (302212147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30419 + ... + 39111.

It is an arithmetic number, because the mean of its divisors is an integer number (24060645).

Almost surely, 2^302212145 is an apocalyptic number.

It is an amenable number.

302212145 is a deficient number, since it is larger than the sum of its proper divisors (82758175).

302212145 is a wasteful number, since it uses less digits than its factorization.

302212145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9124.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 302212145 is about 17384.2499119174. The cubic root of 302212145 is about 671.0743474958.

Adding to 302212145 its reverse (541212203), we get a palindrome (843424348).

The spelling of 302212145 in words is "three hundred two million, two hundred twelve thousand, one hundred forty-five".