20402402107 has 2 divisors, whose sum is σ = 20402402108. Its totient is φ = 20402402106.

The previous prime is 20402402071. The next prime is 20402402113. The reversal of 20402402107 is 70120420402.

It is a happy number.

Together with previous prime (20402402071) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20402402107 - 2⁷ = 20402401979 is a prime.

It is a super-3 number, since 3×20402402107³ (a number of 32 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (20402402147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10201201053 + 10201201054.

It is an arithmetic number, because the mean of its divisors is an integer number (10201201054).

Almost surely, 2^20402402107 is an apocalyptic number.

20402402107 is a deficient number, since it is larger than the sum of its proper divisors (1).

20402402107 is an equidigital number, since it uses as much as digits as its factorization.

20402402107 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 896, while the sum is 22.

Adding to 20402402107 its reverse (70120420402), we get a palindrome (90522822509).

The spelling of 20402402107 in words is "twenty billion, four hundred two million, four hundred two thousand, one hundred seven".