1242403206 has 32 divisors (see below), whose sum is σ = 2747841408. Its totient is φ = 371327040.

The previous prime is 1242403199. The next prime is 1242403207. The reversal of 1242403206 is 6023042421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242403207) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124116 + ... + 133751.

It is an arithmetic number, because the mean of its divisors is an integer number (85870044).

Almost surely, 2^1242403206 is an apocalyptic number.

1242403206 is an abundant number, since it is smaller than the sum of its proper divisors (1505438202).

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

1242403206 is a wasteful number, since it uses less digits than its factorization.

1242403206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257956.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 1242403206 is about 35247.7404382182. The cubic root of 1242403206 is about 1075.0306696857.

Adding to 1242403206 its reverse (6023042421), we get a palindrome (7265445627).

The spelling of 1242403206 in words is "one billion, two hundred forty-two million, four hundred three thousand, two hundred six".