155170742 has 16 divisors (see below), whose sum is σ = 243901152. Its totient is φ = 73898880.

The previous prime is 155170733. The next prime is 155170787. The reversal of 155170742 is 247071551.

It is a zygodrome in base 8.

It is a junction number, because it is equal to n+sod(n) for n = 155170699 and 155170708.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4088 + ... + 18084.

It is an arithmetic number, because the mean of its divisors is an integer number (15243822).

Almost surely, 2^155170742 is an apocalyptic number.

155170742 is a deficient number, since it is larger than the sum of its proper divisors (88730410).

155170742 is a wasteful number, since it uses less digits than its factorization.

155170742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14263.

The product of its (nonzero) digits is 9800, while the sum is 32.

The square root of 155170742 is about 12456.7548743644. The cubic root of 155170742 is about 537.3657044693.

The spelling of 155170742 in words is "one hundred fifty-five million, one hundred seventy thousand, seven hundred forty-two".