123578340 has 48 divisors (see below), whose sum is σ = 350904960. Its totient is φ = 32488960.

The previous prime is 123578339. The next prime is 123578353. The reversal of 123578340 is 43875321.

It is a super-2 number, since 2×123578340² = 30543212234311200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10245 + ... + 18764.

It is an arithmetic number, because the mean of its divisors is an integer number (7310520).

Almost surely, 2^123578340 is an apocalyptic number.

123578340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123578340 is an abundant number, since it is smaller than the sum of its proper divisors (227326620).

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

123578340 is a wasteful number, since it uses less digits than its factorization.

123578340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29092 (or 29090 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 123578340 is about 11116.5795099032. The cubic root of 123578340 is about 498.0972213859.

The spelling of 123578340 in words is "one hundred twenty-three million, five hundred seventy-eight thousand, three hundred forty".