100000402 has 4 divisors (see below), whose sum is σ = 150000606. Its totient is φ = 50000200.

The previous prime is 100000399. The next prime is 100000421. The reversal of 100000402 is 204000001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 204000001 = 197 ⋅1035533.

It can be written as a sum of positive squares in only one way, i.e., 67749361 + 32251041 = 8231^2 + 5679^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25000099 + ... + 25000102.

Almost surely, 2^100000402 is an apocalyptic number.

100000402 is a deficient number, since it is larger than the sum of its proper divisors (50000204).

100000402 is an equidigital number, since it uses as much as digits as its factorization.

100000402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50000203.

The product of its (nonzero) digits is 8, while the sum is 7.

The square root of 100000402 is about 10000.0200999798. The cubic root of 100000402 is about 464.1595053333.

Adding to 100000402 its reverse (204000001), we get a palindrome (304000403).

The spelling of 100000402 in words is "one hundred million, four hundred two", and thus it is an aban number.