1242357802 has 16 divisors (see below), whose sum is σ = 2149297920. Its totient is φ = 527553648.

The previous prime is 1242357793. The next prime is 1242357803. The reversal of 1242357802 is 2087532421.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1242357803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 405538 + ... + 408589.

It is an arithmetic number, because the mean of its divisors is an integer number (134331120).

Almost surely, 2^1242357802 is an apocalyptic number.

1242357802 is a deficient number, since it is larger than the sum of its proper divisors (906940118).

1242357802 is a wasteful number, since it uses less digits than its factorization.

1242357802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 814245.

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 1242357802 is about 35247.0963626793. The cubic root of 1242357802 is about 1075.0175737527.

It can be divided in two parts, 12423 and 57802, that added together give a square (70225 = 265²).

The spelling of 1242357802 in words is "one billion, two hundred forty-two million, three hundred fifty-seven thousand, eight hundred two".