1242030042 has 24 divisors (see below), whose sum is σ = 2935707840. Its totient is φ = 376372680.

The previous prime is 1242030007. The next prime is 1242030059. The reversal of 1242030042 is 2400302421.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1242029997 and 1242030024.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3136242 + ... + 3136637.

It is an arithmetic number, because the mean of its divisors is an integer number (122321160).

Almost surely, 2^1242030042 is an apocalyptic number.

1242030042 is an abundant number, since it is smaller than the sum of its proper divisors (1693677798).

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

1242030042 is a wasteful number, since it uses less digits than its factorization.

1242030042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6272898 (or 6272895 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 1242030042 is about 35242.4465949798. The cubic root of 1242030042 is about 1074.9230280565.

Adding to 1242030042 its reverse (2400302421), we get a palindrome (3642332463).

The spelling of 1242030042 in words is "one billion, two hundred forty-two million, thirty thousand, forty-two".