102421442330 has 32 divisors (see below), whose sum is σ = 189431652240. Its totient is φ = 39842288640.

The previous prime is 102421442329. The next prime is 102421442369. The reversal of 102421442330 is 33244124201.

It can be written as a sum of positive squares in 8 ways, for example, as 21923836489 + 80497605841 = 148067^2 + 283721^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 102421442330.

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, 722720 + ... + 852740.

Almost surely, 2^102421442330 is an apocalyptic number.

102421442330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102421442330 is a deficient number, since it is larger than the sum of its proper divisors (87010209910).

102421442330 is a wasteful number, since it uses less digits than its factorization.

102421442330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132194.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 102421442330 its reverse (33244124201), we get a palindrome (135665566531).

The spelling of 102421442330 in words is "one hundred two billion, four hundred twenty-one million, four hundred forty-two thousand, three hundred thirty".