1242263 has 8 divisors (see below), whose sum is σ = 1399296. Its totient is φ = 1092600.

The previous prime is 1242251. The next prime is 1242271. The reversal of 1242263 is 3622421.

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 1242263 - 2¹⁴ = 1225879 is a prime.

It is a super-2 number, since 2×1242263² = 3086434722338, 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 (1242233) 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, 1481 + ... + 2162.

It is an arithmetic number, because the mean of its divisors is an integer number (174912).

2^1242263 is an apocalyptic number.

1242263 is a deficient number, since it is larger than the sum of its proper divisors (157033).

1242263 is a wasteful number, since it uses less digits than its factorization.

1242263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3685.

The product of its digits is 576, while the sum is 20.

The square root of 1242263 is about 1114.5685263814. The cubic root of 1242263 is about 107.4990228864.

Adding to 1242263 its reverse (3622421), we get a palindrome (4864684).

The spelling of 1242263 in words is "one million, two hundred forty-two thousand, two hundred sixty-three".