1261457 has 8 divisors (see below), whose sum is σ = 1298880. Its totient is φ = 1224720.

The previous prime is 1261427. The next prime is 1261459. The reversal of 1261457 is 7541621.

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 1261457 - 2²⁰ = 212881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1261459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7658 + ... + 7820.

It is an arithmetic number, because the mean of its divisors is an integer number (162360).

2^1261457 is an apocalyptic number.

It is an amenable number.

1261457 is a deficient number, since it is larger than the sum of its proper divisors (37423).

1261457 is a wasteful number, since it uses less digits than its factorization.

1261457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343.

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

The square root of 1261457 is about 1123.1460279055. The cubic root of 1261457 is about 108.0498455325.

The spelling of 1261457 in words is "one million, two hundred sixty-one thousand, four hundred fifty-seven".