161402542 has 8 divisors (see below), whose sum is σ = 276690096. Its totient is φ = 69172512.

The previous prime is 161402497. The next prime is 161402581. The reversal of 161402542 is 245204161.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5764363 + ... + 5764390.

It is an arithmetic number, because the mean of its divisors is an integer number (34586262).

Almost surely, 2^161402542 is an apocalyptic number.

161402542 is a deficient number, since it is larger than the sum of its proper divisors (115287554).

161402542 is a wasteful number, since it uses less digits than its factorization.

161402542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11528762.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 161402542 is about 12704.4300147626. The cubic root of 161402542 is about 544.4651959912.

The spelling of 161402542 in words is "one hundred sixty-one million, four hundred two thousand, five hundred forty-two".