161210430 has 48 divisors (see below), whose sum is σ = 420015024. Its totient is φ = 42900480.

The previous prime is 161210389. The next prime is 161210431. The reversal of 161210430 is 34012161.

It is a happy number.

161210430 is a `hidden beast` number, since 1 + 612 + 10 + 43 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161210431) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49822 + ... + 52958.

It is an arithmetic number, because the mean of its divisors is an integer number (8750313).

Almost surely, 2^161210430 is an apocalyptic number.

161210430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161210430 is an abundant number, since it is smaller than the sum of its proper divisors (258804594).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161210430 is a wasteful number, since it uses less digits than its factorization.

161210430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3721 (or 3718 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 161210430 is about 12696.8669363745. The cubic root of 161210430 is about 544.2490907101.

Adding to 161210430 its reverse (34012161), we get a palindrome (195222591).

The spelling of 161210430 in words is "one hundred sixty-one million, two hundred ten thousand, four hundred thirty".