1245172 has 6 divisors (see below), whose sum is σ = 2179058. Its totient is φ = 622584.

The previous prime is 1245169. The next prime is 1245187. The reversal of 1245172 is 2715421.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1089936 + 155236 = 1044^2 + 394^2 .

It is a plaindrome in base 14.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155643 + ... + 155650.

2^1245172 is an apocalyptic number.

It is an amenable number.

1245172 is a deficient number, since it is larger than the sum of its proper divisors (933886).

1245172 is a wasteful number, since it uses less digits than its factorization.

1245172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311297 (or 311295 counting only the distinct ones).

The product of its digits is 560, while the sum is 22.

The square root of 1245172 is about 1115.8727526022. The cubic root of 1245172 is about 107.5828674187.

The spelling of 1245172 in words is "one million, two hundred forty-five thousand, one hundred seventy-two".