1242481 has 4 divisors (see below), whose sum is σ = 1263600. Its totient is φ = 1221364.

The previous prime is 1242457. The next prime is 1242487. The reversal of 1242481 is 1842421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1242481 is a prime.

It is a super-2 number, since 2×1242481² = 3087518070722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1242487) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10471 + ... + 10588.

It is an arithmetic number, because the mean of its divisors is an integer number (315900).

2^1242481 is an apocalyptic number.

It is an amenable number.

1242481 is a deficient number, since it is larger than the sum of its proper divisors (21119).

1242481 is an equidigital number, since it uses as much as digits as its factorization.

1242481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21118.

The product of its digits is 512, while the sum is 22.

The square root of 1242481 is about 1114.6663177830. Note that the first 3 decimals coincide. The cubic root of 1242481 is about 107.5053107165.

The spelling of 1242481 in words is "one million, two hundred forty-two thousand, four hundred eighty-one".