161424740 has 12 divisors (see below), whose sum is σ = 338991996. Its totient is φ = 64569888.

The previous prime is 161424733. The next prime is 161424763. The reversal of 161424740 is 47424161.

It is a happy number.

161424740 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 60341824 + 101082916 = 7768^2 + 10054^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4035599 + ... + 4035638.

It is an arithmetic number, because the mean of its divisors is an integer number (28249333).

Almost surely, 2^161424740 is an apocalyptic number.

161424740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161424740 is an abundant number, since it is smaller than the sum of its proper divisors (177567256).

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

161424740 is a wasteful number, since it uses less digits than its factorization.

161424740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8071246 (or 8071244 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 161424740 is about 12705.3036169940. The cubic root of 161424740 is about 544.4901552933.

The spelling of 161424740 in words is "one hundred sixty-one million, four hundred twenty-four thousand, seven hundred forty".