155105042 has 32 divisors (see below), whose sum is σ = 253642752. Its totient is φ = 70850304.

The previous prime is 155104981. The next prime is 155105051. The reversal of 155105042 is 240501551.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 155104999 and 155105017.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 404783 + ... + 405165.

It is an arithmetic number, because the mean of its divisors is an integer number (7926336).

Almost surely, 2^155105042 is an apocalyptic number.

155105042 is a deficient number, since it is larger than the sum of its proper divisors (98537710).

155105042 is a wasteful number, since it uses less digits than its factorization.

155105042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 722.

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 155105042 is about 12454.1174717440. The cubic root of 155105042 is about 537.2898527328.

Adding to 155105042 its reverse (240501551), we get a palindrome (395606593).

The spelling of 155105042 in words is "one hundred fifty-five million, one hundred five thousand, forty-two".