123538570 has 32 divisors (see below), whose sum is σ = 239532480. Its totient is φ = 45722880.

The previous prime is 123538561. The next prime is 123538573. The reversal of 123538570 is 75835321.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (123538573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 610 + ... + 15730.

It is an arithmetic number, because the mean of its divisors is an integer number (7485390).

Almost surely, 2^123538570 is an apocalyptic number.

123538570 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123538570 is a deficient number, since it is larger than the sum of its proper divisors (115993910).

123538570 is a wasteful number, since it uses less digits than its factorization.

123538570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15190.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 123538570 is about 11114.7905963180. The cubic root of 123538570 is about 498.0437830787.

The spelling of 123538570 in words is "one hundred twenty-three million, five hundred thirty-eight thousand, five hundred seventy".