30202042391 has 2 divisors, whose sum is σ = 30202042392. Its totient is φ = 30202042390.

The previous prime is 30202042337. The next prime is 30202042411. The reversal of 30202042391 is 19324020203.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 30202042391 - 2⁶ = 30202042327 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30202042391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30202042301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15101021195 + 15101021196.

It is an arithmetic number, because the mean of its divisors is an integer number (15101021196).

Almost surely, 2^30202042391 is an apocalyptic number.

30202042391 is a deficient number, since it is larger than the sum of its proper divisors (1).

30202042391 is an equidigital number, since it uses as much as digits as its factorization.

30202042391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 30202042391 its reverse (19324020203), we get a palindrome (49526062594).

The spelling of 30202042391 in words is "thirty billion, two hundred two million, forty-two thousand, three hundred ninety-one".