1241657 has 6 divisors (see below), whose sum is σ = 1264302. Its totient is φ = 1219392.

The previous prime is 1241651. The next prime is 1241659. The reversal of 1241657 is 7561421.

It can be written as a sum of positive squares in 3 ways, for example, as 109561 + 1132096 = 331^2 + 1064^2 .

It is not a de Polignac number, because 1241657 - 2¹⁶ = 1176121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1241651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5213 + ... + 5445.

It is an arithmetic number, because the mean of its divisors is an integer number (210717).

2^1241657 is an apocalyptic number.

It is an amenable number.

1241657 is a deficient number, since it is larger than the sum of its proper divisors (22645).

1241657 is an frugal number, since it uses more digits than its factorization.

1241657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379 (or 306 counting only the distinct ones).

The product of its digits is 1680, while the sum is 26.

The square root of 1241657 is about 1114.2966391406. The cubic root of 1241657 is about 107.4815400067.

The spelling of 1241657 in words is "one million, two hundred forty-one thousand, six hundred fifty-seven".