1242903406 has 8 divisors (see below), whose sum is σ = 1864748880. Its totient is φ = 621320448.

The previous prime is 1242903401. The next prime is 1242903419. The reversal of 1242903406 is 6043092421.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242903401) 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, 53331 + ... + 73006.

It is an arithmetic number, because the mean of its divisors is an integer number (233093610).

Almost surely, 2^1242903406 is an apocalyptic number.

1242903406 is a deficient number, since it is larger than the sum of its proper divisors (621845474).

1242903406 is a wasteful number, since it uses less digits than its factorization.

1242903406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131258.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 1242903406 is about 35254.8352144780. The cubic root of 1242903406 is about 1075.1749218871.

Adding to 1242903406 its reverse (6043092421), we get a palindrome (7285995827).

The spelling of 1242903406 in words is "one billion, two hundred forty-two million, nine hundred three thousand, four hundred six".