123420654 has 24 divisors (see below), whose sum is σ = 305613360. Its totient is φ = 35263008.

The previous prime is 123420631. The next prime is 123420659. The reversal of 123420654 is 456024321.

123420654 is a `hidden beast` number, since 1 + 2 + 3 + 4 + 2 + 0 + 654 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123420659) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 489639 + ... + 489890.

It is an arithmetic number, because the mean of its divisors is an integer number (12733890).

Almost surely, 2^123420654 is an apocalyptic number.

123420654 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

123420654 is an abundant number, since it is smaller than the sum of its proper divisors (182192706).

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

123420654 is a wasteful number, since it uses less digits than its factorization.

123420654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 979544 (or 979541 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 123420654 is about 11109.4848665453. The cubic root of 123420654 is about 497.8852738092.

Adding to 123420654 its reverse (456024321), we get a palindrome (579444975).

The spelling of 123420654 in words is "one hundred twenty-three million, four hundred twenty thousand, six hundred fifty-four".