1242040442 has 8 divisors (see below), whose sum is σ = 1877730816. Its totient is φ = 616130172.

The previous prime is 1242040421. The next prime is 1242040463. The reversal of 1242040442 is 2440402421.

It is an interprime number because it is at equal distance from previous prime (1242040421) and next prime (1242040463).

It is a sphenic number, since it is the product of 3 distinct primes.

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, 2444708 + ... + 2445215.

It is an arithmetic number, because the mean of its divisors is an integer number (234716352).

Almost surely, 2^1242040442 is an apocalyptic number.

1242040442 is a deficient number, since it is larger than the sum of its proper divisors (635690374).

1242040442 is a wasteful number, since it uses less digits than its factorization.

1242040442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4890052.

The product of its (nonzero) digits is 2048, while the sum is 23.

The square root of 1242040442 is about 35242.5941440184. The cubic root of 1242040442 is about 1074.9260282975.

Adding to 1242040442 its reverse (2440402421), we get a palindrome (3682442863).

The spelling of 1242040442 in words is "one billion, two hundred forty-two million, forty thousand, four hundred forty-two".