123501530 has 8 divisors (see below), whose sum is σ = 222302772. Its totient is φ = 49400608.

The previous prime is 123501529. The next prime is 123501533. The reversal of 123501530 is 35105321.

It can be written as a sum of positive squares in 2 ways, for example, as 120802081 + 2699449 = 10991^2 + 1643^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (123501533) 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, 6175067 + ... + 6175086.

Almost surely, 2^123501530 is an apocalyptic number.

123501530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123501530 is a deficient number, since it is larger than the sum of its proper divisors (98801242).

123501530 is a wasteful number, since it uses less digits than its factorization.

123501530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12350160.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 123501530 is about 11113.1242231876. The cubic root of 123501530 is about 497.9940027127.

Adding to 123501530 its reverse (35105321), we get a palindrome (158606851).

The spelling of 123501530 in words is "one hundred twenty-three million, five hundred one thousand, five hundred thirty".