123454378 has 16 divisors (see below), whose sum is σ = 186955776. Its totient is φ = 61138960.

The previous prime is 123454367. The next prime is 123454411. The reversal of 123454378 is 873454321.

It is a happy 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, 111375 + ... + 112477.

It is an arithmetic number, because the mean of its divisors is an integer number (11684736).

Almost surely, 2^123454378 is an apocalyptic number.

123454378 is a deficient number, since it is larger than the sum of its proper divisors (63501398).

123454378 is a wasteful number, since it uses less digits than its factorization.

123454378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1589.

The product of its digits is 80640, while the sum is 37.

The square root of 123454378 is about 11111.0025650254. The cubic root of 123454378 is about 497.9306177970.

The spelling of 123454378 in words is "one hundred twenty-three million, four hundred fifty-four thousand, three hundred seventy-eight".