1262421 has 6 divisors (see below), whose sum is σ = 1823510. Its totient is φ = 841608.

The previous prime is 1262419. The next prime is 1262441. The reversal of 1262421 is 1242621.

It can be written as a sum of positive squares in only one way, i.e., 756900 + 505521 = 870^2 + 711^2 .

It is not a de Polignac number, because 1262421 - 2¹ = 1262419 is a prime.

It is a super-3 number, since 3×1262421³ = 6035786725443133383, which contains 333 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1262394 and 1262403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1262411) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 70126 + ... + 70143.

2^1262421 is an apocalyptic number.

It is an amenable number.

1262421 is a deficient number, since it is larger than the sum of its proper divisors (561089).

1262421 is a wasteful number, since it uses less digits than its factorization.

1262421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140275 (or 140272 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 1262421 is about 1123.5750976237. The cubic root of 1262421 is about 108.0773622663.

The spelling of 1262421 in words is "one million, two hundred sixty-two thousand, four hundred twenty-one".