161402030 has 32 divisors (see below), whose sum is σ = 294840000. Its totient is φ = 63608832.

The previous prime is 161401991. The next prime is 161402041. The reversal of 161402030 is 30204161.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 359246 + ... + 359694.

It is an arithmetic number, because the mean of its divisors is an integer number (9213750).

Almost surely, 2^161402030 is an apocalyptic number.

161402030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161402030 is a deficient number, since it is larger than the sum of its proper divisors (133437970).

161402030 is a wasteful number, since it uses less digits than its factorization.

161402030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 908.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 161402030 is about 12704.4098642952. The cubic root of 161402030 is about 544.4646202744.

Adding to 161402030 its reverse (30204161), we get a palindrome (191606191).

The spelling of 161402030 in words is "one hundred sixty-one million, four hundred two thousand, thirty".