145220299 has 16 divisors (see below), whose sum is σ = 169632000. Its totient is φ = 121747104.

The previous prime is 145220269. The next prime is 145220329. The reversal of 145220299 is 992022541.

It is an interprime number because it is at equal distance from previous prime (145220269) and next prime (145220329).

It is a cyclic number.

It is not a de Polignac number, because 145220299 - 2²¹ = 143123147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145220209) 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, 92977 + ... + 94525.

It is an arithmetic number, because the mean of its divisors is an integer number (10602000).

Almost surely, 2^145220299 is an apocalyptic number.

145220299 is a deficient number, since it is larger than the sum of its proper divisors (24411701).

145220299 is a wasteful number, since it uses less digits than its factorization.

145220299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1842.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 145220299 is about 12050.7385250863. The cubic root of 145220299 is about 525.6247124267.

The spelling of 145220299 in words is "one hundred forty-five million, two hundred twenty thousand, two hundred ninety-nine".