155549042 has 16 divisors (see below), whose sum is σ = 254944800. Its totient is φ = 70590240.

The previous prime is 155549027. The next prime is 155549077. The reversal of 155549042 is 240945551.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 155548993 and 155549011.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9134 + ... + 19862.

It is an arithmetic number, because the mean of its divisors is an integer number (15934050).

Almost surely, 2^155549042 is an apocalyptic number.

155549042 is a deficient number, since it is larger than the sum of its proper divisors (99395758).

155549042 is a wasteful number, since it uses less digits than its factorization.

155549042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11401.

The product of its (nonzero) digits is 36000, while the sum is 35.

The square root of 155549042 is about 12471.9301633709. The cubic root of 155549042 is about 537.8020420293.

The spelling of 155549042 in words is "one hundred fifty-five million, five hundred forty-nine thousand, forty-two".