1242042030 has 24 divisors (see below), whose sum is σ = 3229309512. Its totient is φ = 331211184.

The previous prime is 1242042023. The next prime is 1242042031. The reversal of 1242042030 is 302402421.

1242042030 is a `hidden beast` number, since 1 + 242 + 0 + 420 + 3 + 0 = 666.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1242041994 and 1242042012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242042031) 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, 6900144 + ... + 6900323.

It is an arithmetic number, because the mean of its divisors is an integer number (134554563).

Almost surely, 2^1242042030 is an apocalyptic number.

1242042030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1242042030 is an abundant number, since it is smaller than the sum of its proper divisors (1987267482).

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

1242042030 is a wasteful number, since it uses less digits than its factorization.

1242042030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13800480 (or 13800477 counting only the distinct ones).

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

The square root of 1242042030 is about 35242.6166735672. The cubic root of 1242042030 is about 1074.9264864097.

Adding to 1242042030 its reverse (302402421), we get a palindrome (1544444451).

The spelling of 1242042030 in words is "one billion, two hundred forty-two million, forty-two thousand, thirty".