123909652 has 6 divisors (see below), whose sum is σ = 216841898. Its totient is φ = 61954824.

The previous prime is 123909649. The next prime is 123909661. The reversal of 123909652 is 256909321.

It can be written as a sum of positive squares in only one way, i.e., 75272976 + 48636676 = 8676^2 + 6974^2 .

It is a super-2 number, since 2×123909652² = 30707203717522208, which contains 22 as substring.

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 as a sum of consecutive naturals, namely, 15488703 + ... + 15488710.

Almost surely, 2^123909652 is an apocalyptic number.

It is an amenable number.

123909652 is a deficient number, since it is larger than the sum of its proper divisors (92932246).

123909652 is a wasteful number, since it uses less digits than its factorization.

123909652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30977417 (or 30977415 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 37.

The square root of 123909652 is about 11131.4712414847. The cubic root of 123909652 is about 498.5419550091.

The spelling of 123909652 in words is "one hundred twenty-three million, nine hundred nine thousand, six hundred fifty-two".