102129401 has 8 divisors (see below), whose sum is σ = 114131808. Its totient is φ = 90580000.

The previous prime is 102129371. The next prime is 102129451. The reversal of 102129401 is 104921201.

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

It is a cyclic number.

It is not a de Polignac number, because 102129401 - 2¹⁴ = 102113017 is a prime.

It is a super-5 number, since 5×102129401⁵ (a number of 41 digits) contains 55555 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102129451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112775 + ... + 113676.

It is an arithmetic number, because the mean of its divisors is an integer number (14266476).

Almost surely, 2^102129401 is an apocalyptic number.

102129401 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

102129401 is the 4520-th centered decagonal number.

It is an amenable number.

102129401 is a deficient number, since it is larger than the sum of its proper divisors (12002407).

102129401 is a wasteful number, since it uses less digits than its factorization.

102129401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226503.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 102129401 is about 10105.9092119413. The cubic root of 102129401 is about 467.4303723504.

The spelling of 102129401 in words is "one hundred two million, one hundred twenty-nine thousand, four hundred one".