123015532 has 12 divisors (see below), whose sum is σ = 216298936. Its totient is φ = 61215840.

The previous prime is 123015521. The next prime is 123015601. The reversal of 123015532 is 235510321.

It is a super-2 number, since 2×123015532² = 30265642226486048, which contains 22 as substring.

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, 72033 + ... + 73720.

Almost surely, 2^123015532 is an apocalyptic number.

It is an amenable number.

123015532 is a deficient number, since it is larger than the sum of its proper divisors (93283404).

123015532 is a wasteful number, since it uses less digits than its factorization.

123015532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145968 (or 145966 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 123015532 is about 11091.2367209433. The cubic root of 123015532 is about 497.3399156665.

Adding to 123015532 its reverse (235510321), we get a palindrome (358525853).

The spelling of 123015532 in words is "one hundred twenty-three million, fifteen thousand, five hundred thirty-two".