123920064 has 56 divisors (see below), whose sum is σ = 364307120. Its totient is φ = 41306112.

The previous prime is 123920057. The next prime is 123920101. The reversal of 123920064 is 460029321.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34129 + ... + 37584.

Almost surely, 2^123920064 is an apocalyptic number.

It is an amenable number.

123920064 is an abundant number, since it is smaller than the sum of its proper divisors (240387056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123920064 is an equidigital number, since it uses as much as digits as its factorization.

123920064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71734 (or 71718 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 123920064 is about 11131.9389146725. The cubic root of 123920064 is about 498.5559186065. Note that the first 3 decimals are identical.

Adding to 123920064 its reverse (460029321), we get a palindrome (583949385).

The spelling of 123920064 in words is "one hundred twenty-three million, nine hundred twenty thousand, sixty-four".