123787212 has 24 divisors (see below), whose sum is σ = 289052736. Its totient is φ = 41231568.

The previous prime is 123787211. The next prime is 123787289. The reversal of 123787212 is 212787321.

It is not an unprimeable number, because it can be changed into a prime (123787211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17683 + ... + 23669.

It is an arithmetic number, because the mean of its divisors is an integer number (12043864).

Almost surely, 2^123787212 is an apocalyptic number.

123787212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

123787212 is an abundant number, since it is smaller than the sum of its proper divisors (165265524).

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

123787212 is a wasteful number, since it uses less digits than its factorization.

123787212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7717 (or 7715 counting only the distinct ones).

The product of its digits is 9408, while the sum is 33.

The square root of 123787212 is about 11125.9701599456. The cubic root of 123787212 is about 498.3776912550.

Adding to 123787212 its sum of digits (33), we get a triangular number (123787245 = T₁₅₇₃₄).

The spelling of 123787212 in words is "one hundred twenty-three million, seven hundred eighty-seven thousand, two hundred twelve".