20102132 has 6 divisors (see below), whose sum is σ = 35178738. Its totient is φ = 10051064.

The previous prime is 20102129. The next prime is 20102153. The reversal of 20102132 is 23120102.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 19589476 + 512656 = 4426^2 + 716^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2512763 + ... + 2512770.

It is an arithmetic number, because the mean of its divisors is an integer number (5863123).

Almost surely, 2^20102132 is an apocalyptic number.

It is an amenable number.

20102132 is a deficient number, since it is larger than the sum of its proper divisors (15076606).

20102132 is a wasteful number, since it uses less digits than its factorization.

20102132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5025537 (or 5025535 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 20102132 is about 4483.5401191469. The cubic root of 20102132 is about 271.9030255515.

Adding to 20102132 its reverse (23120102), we get a palindrome (43222234).

The spelling of 20102132 in words is "twenty million, one hundred two thousand, one hundred thirty-two".