102124402 has 4 divisors (see below), whose sum is σ = 153186606. Its totient is φ = 51062200.

The previous prime is 102124381. The next prime is 102124409. The reversal of 102124402 is 204421201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 67420521 + 34703881 = 8211^2 + 5891^2 .

It is not an unprimeable number, because it can be changed into a prime (102124409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25531099 + ... + 25531102.

Almost surely, 2^102124402 is an apocalyptic number.

102124402 is a deficient number, since it is larger than the sum of its proper divisors (51062204).

102124402 is an equidigital number, since it uses as much as digits as its factorization.

102124402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51062203.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 102124402 is about 10105.6618783729. The cubic root of 102124402 is about 467.4227456776.

Adding to 102124402 its reverse (204421201), we get a palindrome (306545603).

The spelling of 102124402 in words is "one hundred two million, one hundred twenty-four thousand, four hundred two".