155442712 has 16 divisors (see below), whose sum is σ = 291751200. Its totient is φ = 77642400.

The previous prime is 155442689. The next prime is 155442733. The reversal of 155442712 is 217244551.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1039 + ... + 17662.

It is an arithmetic number, because the mean of its divisors is an integer number (18234450).

Almost surely, 2^155442712 is an apocalyptic number.

It is an amenable number.

155442712 is a deficient number, since it is larger than the sum of its proper divisors (136308488).

155442712 is a wasteful number, since it uses less digits than its factorization.

155442712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19746 (or 19742 counting only the distinct ones).

The product of its digits is 11200, while the sum is 31.

The square root of 155442712 is about 12467.6666622107. Note that the first 5 decimals coincide. The cubic root of 155442712 is about 537.6794707695.

The spelling of 155442712 in words is "one hundred fifty-five million, four hundred forty-two thousand, seven hundred twelve".