123067840 has 56 divisors (see below), whose sum is σ = 334926432. Its totient is φ = 42193920.

The previous prime is 123067837. The next prime is 123067843. The reversal of 123067840 is 48760321.

It is an interprime number because it is at equal distance from previous prime (123067837) and next prime (123067843).

It is a tau number, because it is divible by the number of its divisors (56).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123067843) 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, 25231 + ... + 29710.

Almost surely, 2^123067840 is an apocalyptic number.

123067840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123067840 is an abundant number, since it is smaller than the sum of its proper divisors (211858592).

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

123067840 is an equidigital number, since it uses as much as digits as its factorization.

123067840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54965 (or 54955 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 123067840 is about 11093.5945482066. The cubic root of 123067840 is about 497.4103977416.

The spelling of 123067840 in words is "one hundred twenty-three million, sixty-seven thousand, eight hundred forty".