161420602 has 16 divisors (see below), whose sum is σ = 282369600. Its totient is φ = 69179964.

The previous prime is 161420573. The next prime is 161420617. The reversal of 161420602 is 206024161.

It is a super-2 number, since 2×161420602² = 52113221500084808, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116968 + ... + 118339.

It is an arithmetic number, because the mean of its divisors is an integer number (17648100).

Almost surely, 2^161420602 is an apocalyptic number.

161420602 is a deficient number, since it is larger than the sum of its proper divisors (120948998).

161420602 is an equidigital number, since it uses as much as digits as its factorization.

161420602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235330 (or 235316 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 161420602 is about 12705.1407705700. The cubic root of 161420602 is about 544.4855027237.

Adding to 161420602 its reverse (206024161), we get a palindrome (367444763).

The spelling of 161420602 in words is "one hundred sixty-one million, four hundred twenty thousand, six hundred two".