1261421 has 8 divisors (see below), whose sum is σ = 1488384. Its totient is φ = 1046160.

The previous prime is 1261411. The next prime is 1261427. The reversal of 1261421 is 1241621.

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 1261421 - 2⁶ = 1261357 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1261421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1261427) 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, 2690 + ... + 3123.

It is an arithmetic number, because the mean of its divisors is an integer number (186048).

2^1261421 is an apocalyptic number.

It is an amenable number.

1261421 is a deficient number, since it is larger than the sum of its proper divisors (226963).

1261421 is an equidigital number, since it uses as much as digits as its factorization.

1261421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5851.

The product of its digits is 96, while the sum is 17.

The square root of 1261421 is about 1123.1300013801. The cubic root of 1261421 is about 108.0488176651.

The spelling of 1261421 in words is "one million, two hundred sixty-one thousand, four hundred twenty-one".