243115025402 has 32 divisors (see below), whose sum is σ = 379880081280. Its totient is φ = 116549697600.

The previous prime is 243115025303. The next prime is 243115025437. The reversal of 243115025402 is 204520511342.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4784027 + ... + 4834577.

It is an arithmetic number, because the mean of its divisors is an integer number (11871252540).

Almost surely, 2^243115025402 is an apocalyptic number.

243115025402 is a deficient number, since it is larger than the sum of its proper divisors (136765055878).

243115025402 is a wasteful number, since it uses less digits than its factorization.

243115025402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51158.

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 243115025402 its reverse (204520511342), we get a palindrome (447635536744).

The spelling of 243115025402 in words is "two hundred forty-three billion, one hundred fifteen million, twenty-five thousand, four hundred two".