100421342025 has 48 divisors (see below), whose sum is σ = 174676403328. Its totient is φ = 50839488000.

The previous prime is 100421342009. The next prime is 100421342101. The reversal of 100421342025 is 520243124001.

It is not a de Polignac number, because 100421342025 - 2⁴ = 100421342009 is a prime.

It is a super-2 number, since 2×100421342025² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 100421341986 and 100421342004.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 327541 + ... + 555090.

It is an arithmetic number, because the mean of its divisors is an integer number (3639091736).

Almost surely, 2^100421342025 is an apocalyptic number.

100421342025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

100421342025 is a deficient number, since it is larger than the sum of its proper divisors (74255061303).

100421342025 is a wasteful number, since it uses less digits than its factorization.

100421342025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 882722 (or 882717 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 100421342025 its reverse (520243124001), we get a palindrome (620664466026).

The spelling of 100421342025 in words is "one hundred billion, four hundred twenty-one million, three hundred forty-two thousand, twenty-five".