102020125 has 8 divisors (see below), whose sum is σ = 127321272. Its totient is φ = 81616000.

The previous prime is 102020119. The next prime is 102020143. The reversal of 102020125 is 521020201.

It can be written as a sum of positive squares in 4 ways, for example, as 191844 + 101828281 = 438^2 + 10091^2 .

It is not a de Polignac number, because 102020125 - 2⁷ = 102019997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 407956 + ... + 408205.

It is an arithmetic number, because the mean of its divisors is an integer number (15915159).

Almost surely, 2^102020125 is an apocalyptic number.

It is an amenable number.

102020125 is a deficient number, since it is larger than the sum of its proper divisors (25301147).

102020125 is an frugal number, since it uses more digits than its factorization.

102020125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 816176 (or 816166 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 102020125 is about 10100.5012251868. The cubic root of 102020125 is about 467.2635997741.

Adding to 102020125 its reverse (521020201), we get a palindrome (623040326).

The spelling of 102020125 in words is "one hundred two million, twenty thousand, one hundred twenty-five".