1242464 has 24 divisors (see below), whose sum is σ = 2508408. Its totient is φ = 605440.

The previous prime is 1242457. The next prime is 1242487. The reversal of 1242464 is 4642421.

1242464 is nontrivially palindromic in base 3.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 839 + ... + 1785.

It is an arithmetic number, because the mean of its divisors is an integer number (104517).

2^1242464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1242464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1254204).

1242464 is an abundant number, since it is smaller than the sum of its proper divisors (1265944).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1242464 is an equidigital number, since it uses as much as digits as its factorization.

1242464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 998 (or 990 counting only the distinct ones).

The product of its digits is 1536, while the sum is 23.

The square root of 1242464 is about 1114.6586921565. The cubic root of 1242464 is about 107.5048204076.

Adding to 1242464 its reverse (4642421), we get a palindrome (5884885).

The spelling of 1242464 in words is "one million, two hundred forty-two thousand, four hundred sixty-four".