100402540423 has 2 divisors, whose sum is σ = 100402540424. Its totient is φ = 100402540422.

The previous prime is 100402540391. The next prime is 100402540429. The reversal of 100402540423 is 324045204001.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 100402540423 - 2⁵ = 100402540391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100402540429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50201270211 + 50201270212.

It is an arithmetic number, because the mean of its divisors is an integer number (50201270212).

Almost surely, 2^100402540423 is an apocalyptic number.

100402540423 is a deficient number, since it is larger than the sum of its proper divisors (1).

100402540423 is an equidigital number, since it uses as much as digits as its factorization.

100402540423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3840, while the sum is 25.

Adding to 100402540423 its reverse (324045204001), we get a palindrome (424447744424).

The spelling of 100402540423 in words is "one hundred billion, four hundred two million, five hundred forty thousand, four hundred twenty-three".