102052402 has 4 divisors (see below), whose sum is σ = 153078606. Its totient is φ = 51026200.

The previous prime is 102052399. The next prime is 102052409. The reversal of 102052402 is 204250201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 204250201 = 173 ⋅1180637.

It can be written as a sum of positive squares in only one way, i.e., 102030201 + 22201 = 10101^2 + 149^2 .

It is not an unprimeable number, because it can be changed into a prime (102052409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25513099 + ... + 25513102.

Almost surely, 2^102052402 is an apocalyptic number.

102052402 is a deficient number, since it is larger than the sum of its proper divisors (51026204).

102052402 is an equidigital number, since it uses as much as digits as its factorization.

102052402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51026203.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 102052402 is about 10102.0988908246. The cubic root of 102052402 is about 467.3128720034.

The spelling of 102052402 in words is "one hundred two million, fifty-two thousand, four hundred two".