123521245 has 8 divisors (see below), whose sum is σ = 148368384. Its totient is φ = 98721744.

The previous prime is 123521239. The next prime is 123521291. The reversal of 123521245 is 542125321.

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

It is a cyclic number.

It is not a de Polignac number, because 123521245 - 2⁷ = 123521117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5929 + ... + 16798.

It is an arithmetic number, because the mean of its divisors is an integer number (18546048).

Almost surely, 2^123521245 is an apocalyptic number.

It is an amenable number.

123521245 is a deficient number, since it is larger than the sum of its proper divisors (24847139).

123521245 is a wasteful number, since it uses less digits than its factorization.

123521245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23819.

The product of its digits is 2400, while the sum is 25.

The square root of 123521245 is about 11114.0112020818. The cubic root of 123521245 is about 498.0205001695.

Adding to 123521245 its reverse (542125321), we get a palindrome (665646566).

The spelling of 123521245 in words is "one hundred twenty-three million, five hundred twenty-one thousand, two hundred forty-five".