161425214 has 4 divisors (see below), whose sum is σ = 242137824. Its totient is φ = 80712606.

The previous prime is 161425207. The next prime is 161425237. The reversal of 161425214 is 412524161.

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

It is a plaindrome in base 9.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 40356302 + ... + 40356305.

It is an arithmetic number, because the mean of its divisors is an integer number (60534456).

Almost surely, 2^161425214 is an apocalyptic number.

161425214 is a deficient number, since it is larger than the sum of its proper divisors (80712610).

161425214 is an equidigital number, since it uses as much as digits as its factorization.

161425214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80712609.

The product of its digits is 1920, while the sum is 26.

The square root of 161425214 is about 12705.3222706077. The cubic root of 161425214 is about 544.4906882312.

Adding to 161425214 its reverse (412524161), we get a palindrome (573949375).

The spelling of 161425214 in words is "one hundred sixty-one million, four hundred twenty-five thousand, two hundred fourteen".