1242440442 has 24 divisors (see below), whose sum is σ = 2708475744. Its totient is φ = 411605064.

The previous prime is 1242440411. The next prime is 1242440443. The reversal of 1242440442 is 2440442421.

It is not an unprimeable number, because it can be changed into a prime (1242440443) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 208798 + ... + 214665.

It is an arithmetic number, because the mean of its divisors is an integer number (112853156).

Almost surely, 2^1242440442 is an apocalyptic number.

1242440442 is an abundant number, since it is smaller than the sum of its proper divisors (1466035302).

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

1242440442 is a wasteful number, since it uses less digits than its factorization.

1242440442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423634 (or 423631 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 27.

The square root of 1242440442 is about 35248.2686383317. The cubic root of 1242440442 is about 1075.0414094739.

Adding to 1242440442 its reverse (2440442421), we get a palindrome (3682882863).

The spelling of 1242440442 in words is "one billion, two hundred forty-two million, four hundred forty thousand, four hundred forty-two".