123213002040 has 64 divisors (see below), whose sum is σ = 410710010400. Its totient is φ = 32856800256.

The previous prime is 123213002023. The next prime is 123213002051. The reversal of 123213002040 is 40200312321.

123213002040 is a `hidden beast` number, since 1 + 2 + 321 + 300 + 2 + 0 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57041977 + ... + 57044136.

Almost surely, 2^123213002040 is an apocalyptic number.

123213002040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123213002040 is an abundant number, since it is smaller than the sum of its proper divisors (287497008360).

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

123213002040 is a wasteful number, since it uses less digits than its factorization.

123213002040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114086133 (or 114086123 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 123213002040 its reverse (40200312321), we get a palindrome (163413314361).

The spelling of 123213002040 in words is "one hundred twenty-three billion, two hundred thirteen million, two thousand, forty".