155123932 has 12 divisors (see below), whose sum is σ = 271582920. Its totient is φ = 77528816.

The previous prime is 155123911. The next prime is 155123933. The reversal of 155123932 is 239321551.

It is a junction number, because it is equal to n+sod(n) for n = 155123894 and 155123903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155123933) by changing a digit.

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, 4398 + ... + 18154.

It is an arithmetic number, because the mean of its divisors is an integer number (22631910).

Almost surely, 2^155123932 is an apocalyptic number.

It is an amenable number.

155123932 is a deficient number, since it is larger than the sum of its proper divisors (116458988).

155123932 is a wasteful number, since it uses less digits than its factorization.

155123932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16580 (or 16578 counting only the distinct ones).

The product of its digits is 8100, while the sum is 31.

The square root of 155123932 is about 12454.8758323799. The cubic root of 155123932 is about 537.3116637438.

The spelling of 155123932 in words is "one hundred fifty-five million, one hundred twenty-three thousand, nine hundred thirty-two".