123213406740 has 24 divisors (see below), whose sum is σ = 344997539040. Its totient is φ = 32856908448.

The previous prime is 123213406721. The next prime is 123213406759. The reversal of 123213406740 is 47604312321.

It is an interprime number because it is at equal distance from previous prime (123213406721) and next prime (123213406759).

It is a congruent number.

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, 1026778330 + ... + 1026778449.

It is an arithmetic number, because the mean of its divisors is an integer number (14374897460).

Almost surely, 2^123213406740 is an apocalyptic number.

123213406740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123213406740 is an abundant number, since it is smaller than the sum of its proper divisors (221784132300).

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

123213406740 is a wasteful number, since it uses less digits than its factorization.

123213406740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2053556791 (or 2053556789 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 33.

The spelling of 123213406740 in words is "one hundred twenty-three billion, two hundred thirteen million, four hundred six thousand, seven hundred forty".