123121460 has 96 divisors (see below), whose sum is σ = 332881920. Its totient is φ = 37123200.

The previous prime is 123121457. The next prime is 123121477. The reversal of 123121460 is 64121321.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46451 + ... + 49029.

It is an arithmetic number, because the mean of its divisors is an integer number (3467520).

Almost surely, 2^123121460 is an apocalyptic number.

123121460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123121460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166440960).

123121460 is an abundant number, since it is smaller than the sum of its proper divisors (209760460).

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

123121460 is a wasteful number, since it uses less digits than its factorization.

123121460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2637 (or 2635 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 123121460 is about 11096.0109949477. The cubic root of 123121460 is about 497.4826269364.

Adding to 123121460 its reverse (64121321), we get a palindrome (187242781).

The spelling of 123121460 in words is "one hundred twenty-three million, one hundred twenty-one thousand, four hundred sixty".