100402507 has 2 divisors, whose sum is σ = 100402508. Its totient is φ = 100402506.

The previous prime is 100402499. The next prime is 100402537. The reversal of 100402507 is 705204001.

It is a weak prime.

It is an emirp because it is prime and its reverse (705204001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 100402507 - 2³ = 100402499 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (100402537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50201253 + 50201254.

It is an arithmetic number, because the mean of its divisors is an integer number (50201254).

Almost surely, 2^100402507 is an apocalyptic number.

100402507 is a deficient number, since it is larger than the sum of its proper divisors (1).

100402507 is an equidigital number, since it uses as much as digits as its factorization.

100402507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 100402507 is about 10020.1051391689. The cubic root of 100402507 is about 464.7808070096.

Adding to 100402507 its reverse (705204001), we get a palindrome (805606508).

The spelling of 100402507 in words is "one hundred million, four hundred two thousand, five hundred seven".