1242146042 has 8 divisors (see below), whose sum is σ = 1863548532. Its totient is φ = 620963200.

The previous prime is 1242146041. The next prime is 1242146051. The reversal of 1242146042 is 2406412421.

It can be written as a sum of positive squares in 2 ways, for example, as 1168340761 + 73805281 = 34181^2 + 8591^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1242146041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39959 + ... + 63882.

Almost surely, 2^1242146042 is an apocalyptic number.

1242146042 is a deficient number, since it is larger than the sum of its proper divisors (621402490).

1242146042 is a wasteful number, since it uses less digits than its factorization.

1242146042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109824.

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 1242146042 is about 35244.0922992776. The cubic root of 1242146042 is about 1074.9564913345.

Adding to 1242146042 its reverse (2406412421), we get a palindrome (3648558463).

The spelling of 1242146042 in words is "one billion, two hundred forty-two million, one hundred forty-six thousand, forty-two".