161424900 has 432 divisors, whose sum is σ = 654652544. Its totient is φ = 33592320.

The previous prime is 161424871. The next prime is 161424937. The reversal of 161424900 is 9424161.

161424900 is a `hidden beast` number, since 1 + 614 + 2 + 49 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 2211264 + ... + 2211336.

Almost surely, 2^161424900 is an apocalyptic number.

161424900 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 161424900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (327326272).

161424900 is an abundant number, since it is smaller than the sum of its proper divisors (493227644).

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

161424900 is a wasteful number, since it uses less digits than its factorization.

161424900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122 (or 103 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 161424900 is about 12705.3099135755. The cubic root of 161424900 is about 544.4903351881.

The spelling of 161424900 in words is "one hundred sixty-one million, four hundred twenty-four thousand, nine hundred".