1234404340 has 96 divisors (see below), whose sum is σ = 2968557984. Its totient is φ = 427130880.

The previous prime is 1234404329. The next prime is 1234404389. The reversal of 1234404340 is 434044321.

It can be written as a sum of positive squares in 16 ways, for example, as 829670416 + 404733924 = 28804^2 + 20118^2 .

It is a super-2 number, since 2×1234404340² = 3047508149221671200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1400700 + ... + 1401580.

It is an arithmetic number, because the mean of its divisors is an integer number (30922479).

Almost surely, 2^1234404340 is an apocalyptic number.

1234404340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1234404340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1484278992).

1234404340 is an abundant number, since it is smaller than the sum of its proper divisors (1734153644).

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

1234404340 is a wasteful number, since it uses less digits than its factorization.

1234404340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1237 (or 1235 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 1234404340 is about 35134.0908520485. The cubic root of 1234404340 is about 1072.7186058121.

Adding to 1234404340 its reverse (434044321), we get a palindrome (1668448661).

The spelling of 1234404340 in words is "one billion, two hundred thirty-four million, four hundred four thousand, three hundred forty".