102742436 has 12 divisors (see below), whose sum is σ = 180241740. Its totient is φ = 51244800.

The previous prime is 102742429. The next prime is 102742487. The reversal of 102742436 is 634247201.

It can be written as a sum of positive squares in 2 ways, for example, as 50324836 + 52417600 = 7094^2 + 7240^2 .

It is a junction number, because it is equal to n+sod(n) for n = 102742399 and 102742408.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29765 + ... + 33036.

It is an arithmetic number, because the mean of its divisors is an integer number (15020145).

Almost surely, 2^102742436 is an apocalyptic number.

It is an amenable number.

102742436 is a deficient number, since it is larger than the sum of its proper divisors (77499304).

102742436 is a wasteful number, since it uses less digits than its factorization.

102742436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63214 (or 63212 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 102742436 is about 10136.1943548849. The cubic root of 102742436 is about 468.3637625255.

Adding to 102742436 its reverse (634247201), we get a palindrome (736989637).

The spelling of 102742436 in words is "one hundred two million, seven hundred forty-two thousand, four hundred thirty-six".