155042312 has 32 divisors (see below), whose sum is σ = 308976120. Its totient is φ = 72683520.

The previous prime is 155042281. The next prime is 155042341. The reversal of 155042312 is 213240551.

It can be written as a sum of positive squares in 4 ways, for example, as 151634596 + 3407716 = 12314^2 + 1846^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36188 + ... + 40244.

Almost surely, 2^155042312 is an apocalyptic number.

It is an amenable number.

155042312 is a deficient number, since it is larger than the sum of its proper divisors (153933808).

155042312 is a wasteful number, since it uses less digits than its factorization.

155042312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4361 (or 4357 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 155042312 is about 12451.5987728484. The cubic root of 155042312 is about 537.2174099186.

Adding to 155042312 its reverse (213240551), we get a palindrome (368282863).

The spelling of 155042312 in words is "one hundred fifty-five million, forty-two thousand, three hundred twelve".