123554020 has 12 divisors (see below), whose sum is σ = 259463484. Its totient is φ = 49421600.

The previous prime is 123553967. The next prime is 123554021. The reversal of 123554020 is 20455321.

It can be written as a sum of positive squares in 2 ways, for example, as 68823616 + 54730404 = 8296^2 + 7398^2 .

It is a junction number, because it is equal to n+sod(n) for n = 123553982 and 123554000.

It is not an unprimeable number, because it can be changed into a prime (123554021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3088831 + ... + 3088870.

It is an arithmetic number, because the mean of its divisors is an integer number (21621957).

Almost surely, 2^123554020 is an apocalyptic number.

123554020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123554020 is an abundant number, since it is smaller than the sum of its proper divisors (135909464).

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

123554020 is a wasteful number, since it uses less digits than its factorization.

123554020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6177710 (or 6177708 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 123554020 is about 11115.4855944309. The cubic root of 123554020 is about 498.0645443565.

It can be divided in two parts, 1235 and 54020, that added together give a palindrome (55255).

The spelling of 123554020 in words is "one hundred twenty-three million, five hundred fifty-four thousand, twenty".