161421342 has 8 divisors (see below), whose sum is σ = 322842696. Its totient is φ = 53807112.

The previous prime is 161421319. The next prime is 161421349. The reversal of 161421342 is 243124161.

161421342 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

161421342 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161421349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13451773 + ... + 13451784.

It is an arithmetic number, because the mean of its divisors is an integer number (40355337).

Almost surely, 2^161421342 is an apocalyptic number.

161421342 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

161421342 is a wasteful number, since it uses less digits than its factorization.

161421342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26903562.

The product of its digits is 1152, while the sum is 24.

The square root of 161421342 is about 12705.1698926067. The cubic root of 161421342 is about 544.4863347502.

The spelling of 161421342 in words is "one hundred sixty-one million, four hundred twenty-one thousand, three hundred forty-two".