161421014742 has 16 divisors (see below), whose sum is σ = 347676031920. Its totient is φ = 49668004512.

The previous prime is 161421014707. The next prime is 161421014743. The reversal of 161421014742 is 247410124161.

161421014742 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161421014743) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1034750017 + ... + 1034750172.

It is an arithmetic number, because the mean of its divisors is an integer number (21729751995).

Almost surely, 2^161421014742 is an apocalyptic number.

161421014742 is an abundant number, since it is smaller than the sum of its proper divisors (186255017178).

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

161421014742 is a wasteful number, since it uses less digits than its factorization.

161421014742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2069500207.

The product of its (nonzero) digits is 10752, while the sum is 33.

The spelling of 161421014742 in words is "one hundred sixty-one billion, four hundred twenty-one million, fourteen thousand, seven hundred forty-two".