155789342 has 4 divisors (see below), whose sum is σ = 233684016. Its totient is φ = 77894670.

The previous prime is 155789317. The next prime is 155789357. The reversal of 155789342 is 243987551.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 243987551 = 769 ⋅317279.

It is a junction number, because it is equal to n+sod(n) for n = 155789293 and 155789302.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38947334 + ... + 38947337.

It is an arithmetic number, because the mean of its divisors is an integer number (58421004).

Almost surely, 2^155789342 is an apocalyptic number.

155789342 is a deficient number, since it is larger than the sum of its proper divisors (77894674).

155789342 is an equidigital number, since it uses as much as digits as its factorization.

155789342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77894673.

The product of its digits is 302400, while the sum is 44.

The square root of 155789342 is about 12481.5600787722. The cubic root of 155789342 is about 538.0788407742.

The spelling of 155789342 in words is "one hundred fifty-five million, seven hundred eighty-nine thousand, three hundred forty-two".