123402460 has 12 divisors (see below), whose sum is σ = 259145208. Its totient is φ = 49360976.

The previous prime is 123402431. The next prime is 123402467. The reversal of 123402460 is 64204321.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123402467) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3085042 + ... + 3085081.

It is an arithmetic number, because the mean of its divisors is an integer number (21595434).

Almost surely, 2^123402460 is an apocalyptic number.

123402460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123402460 is an abundant number, since it is smaller than the sum of its proper divisors (135742748).

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

123402460 is a wasteful number, since it uses less digits than its factorization.

123402460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6170132 (or 6170130 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 123402460 is about 11108.6659865170. The cubic root of 123402460 is about 497.8608074293.

Adding to 123402460 its reverse (64204321), we get a palindrome (187606781).

The spelling of 123402460 in words is "one hundred twenty-three million, four hundred two thousand, four hundred sixty".