102454402 has 8 divisors (see below), whose sum is σ = 154320012. Its totient is φ = 51014400.

The previous prime is 102454399. The next prime is 102454421. The reversal of 102454402 is 204454201.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 82464561 + 19989841 = 9081^2 + 4471^2 .

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

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 105799 + ... + 106762.

Almost surely, 2^102454402 is an apocalyptic number.

102454402 is a deficient number, since it is larger than the sum of its proper divisors (51865610).

102454402 is a wasteful number, since it uses less digits than its factorization.

102454402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212804.

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 102454402 is about 10121.9761904482. The cubic root of 102454402 is about 467.9256736616.

The spelling of 102454402 in words is "one hundred two million, four hundred fifty-four thousand, four hundred two".