210102434 has 4 divisors (see below), whose sum is σ = 315153654. Its totient is φ = 105051216.

The previous prime is 210102427. The next prime is 210102449. The reversal of 210102434 is 434201012.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 107019025 + 103083409 = 10345^2 + 10153^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52525607 + ... + 52525610.

Almost surely, 2^210102434 is an apocalyptic number.

210102434 is a deficient number, since it is larger than the sum of its proper divisors (105051220).

210102434 is a wasteful number, since it uses less digits than its factorization.

210102434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105051219.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 210102434 is about 14494.9106240777. The cubic root of 210102434 is about 594.4888239638.

Adding to 210102434 its reverse (434201012), we get a palindrome (644303446).

The spelling of 210102434 in words is "two hundred ten million, one hundred two thousand, four hundred thirty-four".