1242330440 has 32 divisors (see below), whose sum is σ = 3010263480. Its totient is φ = 458706432.

The previous prime is 1242330421. The next prime is 1242330451. The reversal of 1242330440 is 440332421.

It can be written as a sum of positive squares in 4 ways, for example, as 337163044 + 905167396 = 18362^2 + 30086^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1194029 + ... + 1195068.

Almost surely, 2^1242330440 is an apocalyptic number.

1242330440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1242330440 is an abundant number, since it is smaller than the sum of its proper divisors (1767933040).

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

1242330440 is a wasteful number, since it uses less digits than its factorization.

1242330440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2389121 (or 2389117 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 1242330440 is about 35246.7082150944. The cubic root of 1242330440 is about 1075.0096815425.

Adding to 1242330440 its reverse (440332421), we get a palindrome (1682662861).

The spelling of 1242330440 in words is "one billion, two hundred forty-two million, three hundred thirty thousand, four hundred forty".