161427299 has 4 divisors (see below), whose sum is σ = 176102520. Its totient is φ = 146752080.

The previous prime is 161427283. The next prime is 161427319. The reversal of 161427299 is 992724161.

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

It is a cyclic number.

It is not a de Polignac number, because 161427299 - 2⁴ = 161427283 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161420299) 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 3 ways as a sum of consecutive naturals, for example, 7337594 + ... + 7337615.

It is an arithmetic number, because the mean of its divisors is an integer number (44025630).

Almost surely, 2^161427299 is an apocalyptic number.

161427299 is a deficient number, since it is larger than the sum of its proper divisors (14675221).

161427299 is a wasteful number, since it uses less digits than its factorization.

161427299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14675220.

The product of its digits is 54432, while the sum is 41.

The square root of 161427299 is about 12705.4043225708. The cubic root of 161427299 is about 544.4930324709.

The spelling of 161427299 in words is "one hundred sixty-one million, four hundred twenty-seven thousand, two hundred ninety-nine".