155506142 has 16 divisors (see below), whose sum is σ = 256155264. Its totient is φ = 70215000.

The previous prime is 155506139. The next prime is 155506163. The reversal of 155506142 is 241605551.

It is a happy number.

It is a congruent number.

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, 20084 + ... + 26727.

It is an arithmetic number, because the mean of its divisors is an integer number (16009704).

Almost surely, 2^155506142 is an apocalyptic number.

155506142 is a deficient number, since it is larger than the sum of its proper divisors (100649122).

155506142 is a wasteful number, since it uses less digits than its factorization.

155506142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46975.

The product of its (nonzero) digits is 6000, while the sum is 29.

The square root of 155506142 is about 12470.2101826713. The cubic root of 155506142 is about 537.7525960396.

The spelling of 155506142 in words is "one hundred fifty-five million, five hundred six thousand, one hundred forty-two".