123401502 has 96 divisors (see below), whose sum is σ = 322164000. Its totient is φ = 34909056.

The previous prime is 123401501. The next prime is 123401503. The reversal of 123401502 is 205104321.

123401502 is a `hidden beast` number, since 123 + 40 + 1 + 502 = 666.

It is an interprime number because it is at equal distance from previous prime (123401501) and next prime (123401503).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123401501) 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 47 ways as a sum of consecutive naturals, for example, 394098 + ... + 394410.

It is an arithmetic number, because the mean of its divisors is an integer number (3355875).

Almost surely, 2^123401502 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123401502, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161082000).

123401502 is an abundant number, since it is smaller than the sum of its proper divisors (198762498).

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

123401502 is a wasteful number, since it uses less digits than its factorization.

123401502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487 (or 474 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 123401502 is about 11108.6228669444. The cubic root of 123401502 is about 497.8595190922.

Adding to 123401502 its reverse (205104321), we get a palindrome (328505823).

The spelling of 123401502 in words is "one hundred twenty-three million, four hundred one thousand, five hundred two".