1242469 has 4 divisors (see below), whose sum is σ = 1245420. Its totient is φ = 1239520.

The previous prime is 1242457. The next prime is 1242487. The reversal of 1242469 is 9642421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9642421 = 41 ⋅235181.

It can be written as a sum of positive squares in 2 ways, for example, as 540225 + 702244 = 735^2 + 838^2 .

It is a cyclic number.

It is not a de Polignac number, because 1242469 - 2⁹ = 1241957 is a prime.

It is a super-2 number, since 2×1242469² = 3087458431922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242419) 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, 712 + ... + 1729.

It is an arithmetic number, because the mean of its divisors is an integer number (311355).

2^1242469 is an apocalyptic number.

It is an amenable number.

1242469 is a deficient number, since it is larger than the sum of its proper divisors (2951).

1242469 is an equidigital number, since it uses as much as digits as its factorization.

1242469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2950.

The product of its digits is 3456, while the sum is 28.

The square root of 1242469 is about 1114.6609349932. The cubic root of 1242469 is about 107.5049646166.

It can be divided in two parts, 1242 and 469, that added together give a triangular number (1711 = T₅₈).

The spelling of 1242469 in words is "one million, two hundred forty-two thousand, four hundred sixty-nine".