102144442402 has 8 divisors (see below), whose sum is σ = 153225939456. Its totient is φ = 51069129252.

The previous prime is 102144442373. The next prime is 102144442409. The reversal of 102144442402 is 204244441201.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×102144442402² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (102144442409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1504458 + ... + 1570885.

It is an arithmetic number, because the mean of its divisors is an integer number (19153242432).

Almost surely, 2^102144442402 is an apocalyptic number.

102144442402 is a deficient number, since it is larger than the sum of its proper divisors (51081497054).

102144442402 is a wasteful number, since it uses less digits than its factorization.

102144442402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3091952.

The product of its (nonzero) digits is 8192, while the sum is 28.

Adding to 102144442402 its reverse (204244441201), we get a palindrome (306388883603).

The spelling of 102144442402 in words is "one hundred two billion, one hundred forty-four million, four hundred forty-two thousand, four hundred two".