161420000 has 120 divisors (see below), whose sum is σ = 454242096. Its totient is φ = 55296000.

The previous prime is 161419997. The next prime is 161420023. The reversal of 161420000 is 24161.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 139424 + ... + 140576.

Almost surely, 2^161420000 is an apocalyptic number.

161420000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161420000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (227121048).

161420000 is an abundant number, since it is smaller than the sum of its proper divisors (292822096).

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

161420000 is an equidigital number, since it uses as much as digits as its factorization.

161420000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1190 (or 1167 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 161420000 is about 12705.1170793504. The cubic root of 161420000 is about 544.4848258570.

Adding to 161420000 its reverse (24161), we get a palindrome (161444161).

The spelling of 161420000 in words is "one hundred sixty-one million, four hundred twenty thousand".