1242033240 has 64 divisors (see below), whose sum is σ = 4258402560. Its totient is φ = 283893120.

The previous prime is 1242033239. The next prime is 1242033241. The reversal of 1242033240 is 423302421.

It is an interprime number because it is at equal distance from previous prime (1242033239) and next prime (1242033241).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242033241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 738466 + ... + 740145.

It is an arithmetic number, because the mean of its divisors is an integer number (66537540).

Almost surely, 2^1242033240 is an apocalyptic number.

1242033240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1242033240 is an abundant number, since it is smaller than the sum of its proper divisors (3016369320).

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

1242033240 is a wasteful number, since it uses less digits than its factorization.

1242033240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1478632 (or 1478628 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 1242033240 is about 35242.4919663749. The cubic root of 1242033240 is about 1074.9239506324.

Adding to 1242033240 its reverse (423302421), we get a palindrome (1665335661).

The spelling of 1242033240 in words is "one billion, two hundred forty-two million, thirty-three thousand, two hundred forty".