123346780 has 24 divisors (see below), whose sum is σ = 259237440. Its totient is φ = 49298880.

The previous prime is 123346759. The next prime is 123346801. The reversal of 123346780 is 87643321.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (123346759) and next prime (123346801).

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, 44845 + ... + 47515.

It is an arithmetic number, because the mean of its divisors is an integer number (10801560).

Almost surely, 2^123346780 is an apocalyptic number.

123346780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123346780 is an abundant number, since it is smaller than the sum of its proper divisors (135890660).

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

123346780 is a wasteful number, since it uses less digits than its factorization.

123346780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4989 (or 4987 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 123346780 is about 11106.1595522485. The cubic root of 123346780 is about 497.7859168097.

The spelling of 123346780 in words is "one hundred twenty-three million, three hundred forty-six thousand, seven hundred eighty".